Sunday, September 20, 2020

RIP Jack Bybee

I met jack around 1998. I was a budding audiophile and had just discovered his Bybee Purifiers. They literally changed my life as I was so excited about their performance that I wanted to share them with everyone who had an interest in audio. I started selling them through my old company CryoTweaks,  and started up Tweek Geek a few short years later. Jack was instrumental in this taking place.

Jack was a brilliant physicist who never stopped working. He was passionate about audio and curious about how to make it sound better. I admired his unconventional way of thinking, his drive, curiosity and his spirit. 

I worked with Jack for over 20 years. At first he was a bit intimidating to talk to. You could still hear the Navy sailor in his voice. But after awhile he softened a bit as I grew accustomed to his manner and he grew to trust me. I would get a call from him about once a month to see how I was doing, to discuss his ideas, and how to better sell his products. Every once in awhile the call would start with "I think I've discovered something that you might want to try".  Two weeks later it would be another call. "I found a way to make it better". This was a never ending process for him. He came up with some pretty crazy ideas, but they always worked, and if they were marketable he never stopped improving on them..

Thank you Jack for your ideas, your passion, and your advice. Without them I would not be who I am today. Rest In Peace.

Monday, July 13, 2020

Creating Your "Bubble": Setting Up A Medium Sized Room For Great Listening


The Fantasy

Our listening environments. Most of us fantasize about a cavernous listening room, free from boomy bass and early reflections. Our massive system would sit well away from the room boundaries, as would our favorite listening chair. The drink caddy would be the only thing allowed near the seating during our audio therapy sessions. The thing about large rooms is they also give you a larger margin for error. Error in speaker placement, error in acoustic treatment. They are in a sense more forgiving. This makes getting them to sound good at normal listening levels much easier than a small room.

The flip side to this advantage is it takes a bigger speaker, possibly multiple subwoofers, a larger amplifier, and a lot more acoustic treatments to get to the desired sound pressures in that large room.


The Reality

The reality for many of us is quite different. The average listening room is about 15 feet by 12 feet with 8-10 foot ceilings. Not small, but not large either.  The margin for error in listener and speaker placement is smaller.  We have been told either directly or inferred through reading reviews, etc. that we need 8 feet of space between our speakers and ten feet of space between our listening position and speakers. Following this information places the speakers and the listener near the room boundaries, creating all sorts of room modes, and reflection issues. This may look good, or fit into our assumptions of what should sound good, but are you getting the best listening experience? Probably not.

What a situation like this calls for is defined by the recording industry as mid-field listening. Mid field listening is done at distances of 6-12 feet from the speakers. Most of us are realistically working within the range of 6-9 feet before we start encountering serious boundary interactions.

It takes more work perhaps, but a mid field listening setup can produce a visceral, holographic and tonally even listening experience with less amplifier, less speaker, and fewer acoustic treatments. By work I mean careful speaker placement. Really nailing down the best place for your speakers and the best place for your seating is critical.

Ultimately, we will be creating a "bubble" with properly set up speakers and listening spot, acoustic treatments, and a tweak or two to really dial in the holographic experience.

The Bubble

Step 1: Speaker Placement


I have tried many different methods for speaker placement, most of them do not work as well nor are as simple as New Record Day's method that was recently revealed in one of his great YouTube videos. It's a little counter intuitive, but for a reason (I'll let him explain it). It takes 2 hours or so (I may be really slow at taping off the floor however...)  to really go through, but the end result is worth it.



Take the time and really do this before considering the next recommendation.

Once you have your speakers and seating placed and sounding fantastic, we need to figure out where to place some of the acoustic treatments.
Stillpoints Aperture II in Cherry wood with Cream Grille on a custom stand.


Step 3: Acoustic Treatments

In this example, we will be using 4 acoustic treatments. These will form an area in front of, behind and to the sides of our listening area. 

I recommend The Stillpoints Aperture II panels. Why? Acoustic treatments have a sonic signature. Out of all of the treatments I have experimented with the Aperture II's allow my system to sound the best. The Aperture II's also take a little guesswork out of what type of treatment to place where. They absorb, diffuse and have a little bit of bass trap built in. They keep the sound and soundstage lively, balanced and in tact. One can use a combination of absorbers, diffusers and bass traps from other manufacturers if that's what you have on hand. You are not limited to just 4 treatments either. This is an example and I am taking a minimalist approach.

I place the panels as follows:
  • One centered between the loudspeakers with the main area centered at listening height
  • One on either side of the listening position at the first reflection points
  • One centered behind the main listening seat
12-15 room listening "bubble"
Another example below uses 6 acoustic panels.

This example uses 6 acoustic panels total.

I like the mid field approach for several reasons
  1. It gives every critical component (speakers and your listening chair) acoustical space from room boundaries. This helps with bass response and early reflection issues.
  2. Like near field listening, it takes much of the room out of the equation. Unlike near field listening, the additional distance between listener and speakers allows the sound from the speakers to become more cohesive, and is just less "in your face".

What The Bubble Can And Cannot Do

The "Bubble" will open up your soundstage, improve depth, imaging and detail. How? Most of the sound you will hear from your system will be what is directly radiated from the speakers. Reflected sound, which tends to blur detail and smear the sound, will be greatly reduced. If you have severe bass issues, you may need bass traps. Bass is more of a sound pressure issue than a sound wave issue. The pressure can be a function of the volume and shape of your room, and on some occasions speaker placement can only minimize this issue, not eliminate it. 

Step 4: Tweaks To Enhance Resolution & Soundstage

Into The Twilight Zone... Below I will break down products that will make your space appear, at least to your ears, to be sonically larger.  They also have the added benefit of enhancing resolution and detail as well. All without adding brightness or artificially altering the tone.

The Stein Harmonizers come with their own stands, but for the others, they are small enough to sit atop the acoustic treatments you have placed around you. 

Stein Harmonizer System - The classic tweak. 4 Battery powered boxes allow you to adjust their effect.  Harmonizer H2 system is $2395.

Bybee V2 - This small, rather utilitarian looking device has an effect similar to the Harmonizer system. Adding resolution, richness, air, space, liquidity. Perhaps a little on the more liquid, warmer richer side of things. $399 each.


DMT X1 - The 3 x 2 x 1 walnut box is filled with material that has a very similar effect to the Bybee products. $199 each


Bybee Quantum Clarifier - Smaller and less powerful than the V2 or DMT X1, it may just strike the perfect balance of effect and price. $100 each

Bottom Line

  1. Really work on optimizing the placement of your speakers and seating. 
  2. With a few acoustic treatments, create a "bubble" of sound where the energy that your ears pick up is the direct, radiated from the speakers.
  3. With your system now hitting new heights, widths and depths try out some room enhancing tweaks to see if they do indeed take things further by making the walls in your room disappear.
Thanks for reading this far and as always, if you have questions please don't hesitate to call or email.

Tuesday, July 7, 2020

The DMT X1: Versatile & So Powerful


I'll start with the punchline. After 10 years in development, and 3 more years of optimizing form factor, I can confidently say the DMT X1 deserves to be in your listening room or breaker box. My goal is to make it easy for that to happen, which with my in-home audition program it is.

DMT started out as Sonic Tonic, which was a tiny mixture of the material in a little glass bottle. It was effective, but the bottles could break. I then suspended the materials in epoxy molds which did not break, but did not look that great, and with further research, I found the epoxy hampered the effectiveness and sound negatively.
The original Sonic Tonic


DMT X1 is much more effective, and much more attractive. Batteries and power cords are no longer needed for them to work. In fact, the X1 is more powerful than any other Sonic Tonic or DMT product. It is at least twice as powerful as the DMT mandala, at about 1/4 the size and 1/3 the cost.
DMT Dots


Where the X1 Works Best


As a room treatment: The "Tardis Effect"

My room is fairly large, at 15 to 18 feet wide, 27 feet long with 10' ceilings. It was two rooms at one time, one a roughly 15' x 14' media room, and an 18' x 13' game room. I have my system in the 15' x 14' space and the seating is actually in the 18' x 13' space. Smaller rooms will not need nearly the treatment I have. So with that in mind, below is what I have placed in my room:

  • I have 4 X1's and 4 Bybee V2's placed in the for corners of my room at the ceiling. You can use just the X1, or just the V2, but I found the combination very synergistic.
  • I also have the X1's running along the side walls at ceiling height, spaced about 8 feet apart.
  • I have three X1's running down the center of the room. The first is behind the listening position at ceiling height, the second is on the ceiling between the listening position and the speakers, and the last is centered on the wall behind the speakers at about 5 feet off of the ground.
This setup rivals the familiar Synergistic and Stein room treatment systems in terms of holography, soundstage and immersion factor. Where it differs is in terms of naturalness, soundstage density, room depressurization, musical flow and low level phase information. The music just sounds more natural, less electronic. Instruments are not overly thin or full sounding. Wood sounds wooden, brass sounds appropriately brassy.   It's almost as if the pressure in the room is decreased and the sound opens up into a larger space that what is physically there. Call it "the Tardis effect". Music also just seems to have a natural energy flow. There is no artificial/electronic tension, unless it's in the recording. Image density is something to behold, and one has to be careful here to not get too much of a good thing.
Placement of DMT X1's. Not pictured are the three at ceiling height along the wall behind the listening position.

Starting Slowly

One could start with just a single X1 placed in the center front position. This will increase center image density and resolution. 

The next move would be adding 2 more on the side walls. I placed mine at the ceiling, because I like more image height out of my horn loaded speakers. You can place them as low as ear level on the side walls, about 1.5 feet in front of the front plane of the loudspeakers.

Next is a judgement call. Do you need more ambient fill, more soundstage depth, or more image height?
  • Ambient fill - Try adding 2 to the rear corners of the room. If that isn't satisfactory, try them on the front corners of the room. This works in some cases.
  • Soundstage depth - Add 2 to the front upper corners of the room
  • Image height - Add 1 to the ceiling, between listening position and speakers.

On power: 

If you can place an X1 inside your power conditioner, great! I find it works Extremely well there. In fact the latest iteration of the Stealth power conditioner will have 2 OEM X1's inside.

Try them on your sub panel or main breaker box. I place one on the power coming in to the house, just after the meter and before the breaker box.

The X1 tends to lower the noise floor when placed in power conditioners, revealing more ambiant information and low level detail. The other effects apply here as well, with naturalness and flow of the presentation becoming more organic and less electronic, and chewy, dense imaging.

Comparing DMT X1 to Bybee V2 and Quantum Clarifier

The DMT X1 works very well with all Bybee devices. The X1's effectiveness lies somewhere between the Quantum Clarifier, which I consider the most modestly powerful, and the V2 which is the most powerful of all three devices. I highly recommend using the X1's as an "enhancer" to V2's in your room. More is not necessarily better in every application. Each device has it's place within one's system.
Bybee V2 (left) and Quantum Clarifier (right)

Conclusions

The DMT X1 is a versatile and effective product that can be used as a room or power conditioning treatment. If you love the Bybee Quantum Clarifier or Bybee V2 products, you will find the DMT X1 to be very complimentary. As a standalone product, the X1 lies somewhere between the Quantum Clarifier and V2 in intensity of effect. You may find one is better suited to your tastes than another, and some experimentation may be required. Fortunately, we can help you with determining what might be best in your situation with in-home auditions of any of these products. We are excited for what musical joys lie hidden in your system with these products properly implemented.

Contact Tweek Geek for An In-Home Audition of DMT and Bybee Products

Tuesday, June 23, 2020

Lumin Takes The LEEDH


Lumin Adds LEEDH Lossless Volume Control To ALL Models

What is LEEDH?

LEEDH is a digital volume control algorithm that, unlike every other digital volume control available, is lossless. It's complex algorithm eliminates rounding errors (dither). It modifies the digital signal amplitude exactly, without any changes to its shape and free from any kind of information loss. When used as a preamp/volume control directly connected to an amplifier, you get a purity of signal that is tough to match when using a preamp.

This has long been the promise of DAC's with volume controls, but only a few have come somewhat close to delivering. With LEEDH, this promise is now made reality. Not just to the five figure priced components, but in this case, even the $2000 components in the Lumin lineup. Folks, this is huge.

The Vaunted Lumin X1 streamer/DAC  in Darth Vader black finish.

Why Is This Such A Big Deal?

On the surface, this may not appear to be a big deal. After all, an analog preamp is lossless isn't it? Not really. There are colorations, which are not a bad thing if you enjoy them. There are losses from the circuitry, no matter how good. Noise, extra connections, extra circuits, extra wire. All of these have an effect of veiling the sound. The best preamps minimize these effects a great deal, but not completely. Sixmoons' Joel Chevassus so aptly describes:

"Whatever volume control you use from the best analog beasts such as Robert Koda's Takumi or Ypsilon's PST 100 to more convincing digital algorithms inside a Mola Mola Tambaqui or big Soulution DAC, LEEDH processing reveals how destructive they can be."

He's throwing around some fairly big names in his comparison. Can it be that good? I mean, after all Lumin added it to all of their models, from the $2000 U1 mini to the nearly $14,000 X1 streamer/DAC for free. Our trained audiophile brains ask "How good could it be if it's free?" I understand your thoughts, as I also have the disease. I thought the same thing. Then I listened.

The Lumin T2 streamer/DAC in silver finish.


Dispensing With Your Preamp & Using LEEDH

Connecting the Lumin directly to your amplifier involves making sure your Lumin streamer has the latest firmware and software. If it does, then LEEDH is the default volume control.  You will want to open the Lumin app, venture into the Settings for your streamer, and turn the volume control on. The LEEDH Processing Volume will automatically be turned on. You may also notice an additional volume setting called Max Volume %. This is the gain setting, and can be set to that if the volume control is accidentally boosted to 100, you won't blow your amp or speakers. 



The Sound

The audiophile world is a crowded street bazaar, with everyone using ever more colorful hyperbole to describe their experience, grab your attention, and make you want their product. It's tough for a genuine technological advance to break through the noise these days. This is a genuine advance, and I am glad a company like Pixel Magic (Lumin's parent company) saw the value in the idea, and shared it freely with Lumin owners. My hope is that you who are already Lumin owners will try the LEEDH lossless volume in your own system, sans preamp, and hear what I am talking about.

When it was time set up my X1 directly into my Modwright amplifier and see what this was all about, my expectations were not all that high. I thought the 32 bit volume control on the X1 was very good. Amongst the best I had heard up to now. It's hard to express the level of shock experienced hearing the Lumin with the LEEDH volume control at the helm for the first time.

To be fair, not only was I hearing the LEEDH algorithm, I was also hearing the absence of my preamp. Still, I had used the X1 without a preamp before, but this was something altogether different. It did not sound like the same component. It sounded much, much better. The first thing I noticed was dynamics had real snap and impact, much more live sounding than before. The energy and jump factor increased markedly. After my ears settled in, I began to hear more. Literally. All throughout my listening session the word "purity" kept coming to the forefront of my mind. Purity in this instance meant clarity, more texture, low level information that makes the music real. Tonal colors were more saturated, the image, soundstage became more dense. But the biggest benefit was my analyzer brain shut off after a few minutes and I just listened. Audio therapy. Good stuff.

This was not something one needs to strain to hear. At least in my system it wasn't. Perhaps if you own one of the preamps mentioned in the Sixmoons review it might not be as eye popping, but no doubt Joel was right when he said "LEEDH processing reveals how destructive they (preamps) can be".

Sixmoons reviewer Joel Chevassus sums  the sound up brilliantly in his review of the Lumin X1 and Lumin Amp using the LEEDH lossless algorithm:
"Leedh Processing has significantly boosted the performance of Lumin's network players. There is more clarity, more detail, more timbral accuracy, higher dynamics, less distortion. It's a bit complicated to explain what happens exactly but as soon as you trigger Leedh, you understand to what extent all usual preamplifiers add their own colorations." - Full Review

Sixmoons awarded the Lumin X1 and Amp with a Blue Moon Award.

The very popular U1 Mini Streamer only.

Simplifying Your System

For those looking to simplify their systems, I can think of no better product that enables one to do this. The LEEDH volume control is so good, so transparent, so much better than any preamp I have ever heard, it makes the process of simplifying your audio system, simpler. The Lumin Streamers  , already very good in their own right, are now leading edge, state of the art audio components for their price point and well beyond. Just add powered speakers or your own amp and speakers, and you will finally hear what the rest of your system is capable of, and hear what you may have been missing.

Curious?

For the curious, I have an in-home audition program, and a 30-day money back guarantee. The LEEDH lossless volume is available on every Lumin product. So pretty much whatever your system configuration, there is a Lumin for you. One could sell their preamp, DAC and Streamer and go for the T2 or X1 Streamer DACs, or if you really like your DAC, just sell your preamp and streamer and go for a U1 or U1 Mini streamer only.

The elimination of my preamp, and handing control of the output to the built in LEEDH algorithm is one of the best things I have done for my music listening.

Links


Sunday, May 10, 2020

Level II Improving your Network for Streaming

This tip is not mine, but from a customer. I assume you have already read my first post entitled "Simple, Inexpensive & Effective Ways To Improve Your Streaming Experience"

If you haven't, you should.

Tip#1

Not everyone will be able to do this, but for those of you who's internet provider has supplied you with a Modem AND a wireless router, this tip will help to offload noise and traffic from your audio equipment's network connection.

It's fairly simple. Instead of connecting your ISP's modem directly to their (or your) wireless router, you are going to purchase an ethernet (not wireless) router and connect the modem to that.

In the diagram below, the modem is receiving the connection from the internet, the output is connected to an Ethernet router.
From here, connect your NAS and Streamers via hard wired Ethernet connections, and also connect your wireless router. The wireless router will give connectivity to all of your other household devices as well as connect your controllers to your streamers.  This does two things:
1. It offloads hard wired network processing of your streaming devices and NAS to the Ethernet router. 
2. it creates more separation of the wireless components from the Ethernet connected devices. Meaning less noise.

Try it!

Tip #2

Before you rush out to buy that Ethernet router, make sure you get one that has at least one optical Ethernet port (SFP). That may come in handy in the very near future. :)
Ethernet Router with a single Optical Ethernet port (port is on the far left)



Wednesday, May 6, 2020

Simple, Inexpensive & Effective Ways To Improve Your Streaming Experience


I sell a lot of streamers. I probably sell more streamers than any other product on my site currently. With those sales comes a lot of experience in troubleshooting when things are not going as planned for my customers. I hope these recommendations will help avoid some of those issues when you set up your new streamer.

Many Variables

When you connect a streamer to your audio system, you are also connecting a modem, a router, a server (if you have a music library of your own) maybe a network switch, maybe a hundred feet or more of Ethernet cable.  All of these things can have an effect on the streaming experience. Not to mention the software one uses to control the streamer and  connect to their music library and streaming services. That's a lot of variables!

It is also about more than sound, that's why I frame this in terms of the streaming "experience". It's network connectivity, speed, and user interface in addition to sound. 

With that in mind, here are a few basic, relatively inexpensive tips I give to those that ask. I thought I would post them publicly so I could just reference my blog instead of rewriting these in an email. So here you go.

  1.  A high quality router -  First, make sure you are using a router that is less than 3 years old. internal processors, and clocking mechanisms improve greatly every year, so making sure you have a router that is up to date and capable of handling the bandwidth available with ease is generally helpful. I have Spectrum as my provider, and they gave me a modem and router when I started out with their service. The modem I was stuck with, but I was able to upgrade the router to a Netgear Nighthawk and there was a subtle sonic improvement initially (more on that later). The big thing though was my iPad and phone stopped losing their connection to the streamer and server. It became rock solid. That made my experience much more enjoyable because now my controller wasn't losing connection to my server and having to "find" it every 30 minutes. 
    Netgear Nighthawk Router

  2. Linear power supplies for your modem, routers, switches, etc. - The next thing I did was buy linear power supplies to replace the cheap switching power supplies that came with these devices. Jameco makes all kinds of small, inexpensive linear power supplies that are way less noisy and not terribly expensive, like under $15. What I did was look at the voltage and amperage requirements of the existing power supply on the modem, router, switch and try to get as close as you can. you can usually find this information in the instruction manual, written on the power supply itself, or where the power supply input is on the device. For me, I ordered a 12v and a 15v 1 amp power supply for my router and modem and they were quite happy. You can, of course because it's audio, go nuts with linear power supplies, and they do get better if you spend more and get higher quality. My point is, you can get a lot of improvement without spending a fortune just by getting an inexpensive linear supply.
    Item 143722
    Jameco 12v 2 amp linear power supply
  3. Balanced isolation transformers - Another thing that reduces noise, and isolates computer components (meaning does not allow them to put noise back on the AC lines) are balanced power transformers. Ebay sells these nice 4 outlet versions for about $200 shipped. Balanced power cuts the noise on the AC line feeding the power supplies by 50%. That, coupled with the new linear power supplies made a significant difference on the sound of my streamer. Balanced power on audio equipment is hit and miss performance wise, but on computer equipment I feel it is always an improvement

  4. Ethernet cables - Keeping with the cheap and cheerful nature of this post, I am not going to recommend an audiophile ethernet cable. Many times the ethernet cables that come packaged with products or are part of the installation of our modems are sub par in data transmission capabilities. I have had service people in my home troubleshooting my network and finding faulty ethernet cables. I have found these ethernet cables on Amazon to be of good quality, and frankly they sound just fine as far as I can tell. Your mileage may vary of course.

There you have it. For not much more than a couple hundred bucks you can significantly lower the noise getting into your network,  improve the sound of your streaming system and keep the network components from injecting noise back into your home's AC grid. I hope you found this helpful!

Monday, March 23, 2020

Using Add Powr Products on your Audio Data Stream


With moving to a new home, the opportunities for experimenting with acoustics, AC treatments, etc are plentiful. In this specific case we are talking about tweaks to the devices that connect to the internet, and stream music over our home networks to our audio components.

Not all of these are "Audiophile grade", the modem and/or router from your internet provider most likely was not designed with high quality parts or a low noise linear power supply. They are electronically very noisy devices. Not at all like the audio components most of us own that go to great lengths to have low signal to noise ratios, filter power as well as not put any noise back on our home's electrical grid.  I have found a few things that work to reduce the noise, and make the digital signal sound better when converted to analog.

1. Get A Balanced Power Supply

I make absolutely no money from this recommendation, and I don't care. Most of the time we are stuck with the noisy switching power supplies on routers, switches and modems. not only do they produce noise that gets into the signal path, they also inject noise into our home's electrical grid. A balanced power supply does 2 things: First it cuts the noise on incoming power by 50%. Less garbage in, less garbage out. Second, it uses an isolation transformer, which will electronically isolate anything plugged into it from getting in to your home's AC grid. That is perfect for all of those switching power supplies on your data components.

I've covered balanced power on Computer gear in a previous blog which you can read here.
Balanced power supply. This unit has 4 ac receptacles on the back, and can be found on ebay for around $200.


2. Try an ADD Powr Symphony or Symphony Pro

I stumbled upon this after getting my system set up and fairly dialed in. We have a large panel in one of our bedroom closets that houses all of the Ethernet and coax cables. I'll call it the network closet for the sake of less confusion. In the network closet, the security system and the modem/router from our ISP is connected. I was tidying up the wiring and electrical connections here, and had already installed the balanced power supply for powering all of these devices when I started experimenting.  I had an ADD-Powr Symphony Pro on hand,  and wanted to see if it had any effect on the devices in the closet. As I said I had the audio system fairly dialed in, and was used to what it was delivering in terms of musical characteristics. It took me days of playing with speaker placement to get to a "good place", and I was pretty familiar with the sound of the system in the new room.
Front and rear view of the ADD-Powr Symphony Pro


Adding the ADD-Powr

The Symphony Pro was a surprise. I had the Sorcer X4 in the listening room, and thought that the Symphony Pro would be undetectable or at best, minimal.

I did several A/B listening tests over several days with the Symphony Pro powered up and unpowered in the network closet. Every single time I powered it off, within a very short period of listening to my system I would lose interest in the music, feeling that the soundstage was flatter, and the music less dynamic and interesting. I would engage the Symphony pro and sure enough, I could sit at length, engaged with the music and surrounded by a wide, deep wrap around soundstage. This A/B testing went on for several days, sometimes I would turn off the Symphony pro, and leave the house. I would Forget about what I had done with it while I was away. I would come back to listen later that day to hear a flat, less dynamic, less 3D, & less interesting sonic presentation. I would get up from my listening chair and go over to the network closet and realize I had turned it off. After a few times of that phenomena occurring, I decided the Symphony Pro was staying in my network closet.

Conclusion


Even though our computer and networking devices may not be audiophile grade, there are things we can do to improve the influence they may have on the sound of the musical data that flows through them. The balanced power supply and ADD-Powr Symphony Pro worked to improve power delivery to the data components, and kept their noisy power supplies of the house grid. The impact they had on my system and to my ears was significant enough to warrant keeping them, and sharing my ideas with you.

As always, you can order the ADD-Powr Symphony or Symphony Pro from Tweek Geek with the protection of our 30-Day Money Back Guarantee. If it doesn't work well enough to justify the price tag, send it back for a refund. Official details here.