FAQ Summary:
1. How do I find out the output level of my source componet?
2. Do you offer custom work?
3. Which opamp is the best?
4. Which power supply comes with the M³?
5. Which configuration of β22 ("beta 22") do you offer?
6. Do your amplifiers offer tone control?
7. How will my build look like?
8. Do you offer assembled boards?
9. Can your repair my non-functional build?
10. What are the expected ambient temperatures to operate my β22 ("beta 22") or M³?
11. Can you build my β22 ("beta 22") with these enclosures decorated with fancy lights, connectors and panels? How about boutique wires from this audiophile-approved company?
12. Can I roll my own op-amps on the M³?

 

1. How do I find out the output level of my source component?

The specs sheet or owner's manual should tell you. Typically, a full-sized CD player outputs 2V rms (unbalanced) or 4V rms (balanced) at 1KHz, while iPod outputs <1V rms at 1KHz.

2. Do you offer custom work?

Yes, but to keep the costs reasonable, certain limits apply:

3. Which Opamp is the best?

This is a tough question: it really depends on its application and your preference. For more informed answers, please check out head-fi.org, headwize.com, and Tangent's Notes on Audio Op-Amps.

4. Which power supply comes with the M³?

We standardize on the high-performance σ11 ("sigma 11"), utilizing oversized toroidal transformer. However, for those on a tight budget, we also offer a high quality linear wall-wart power supply.

5. Which configuration of β22 ("beta 22") do you offer?

YBM Audio currently offers the budget 2-channel "passive ground", the cost-effective 3-channel "active ground" as well as the high-performance 4-channel balanced versions.

6. Do your amplifiers offer tone control?

Sorry, with the possible exception of the M³ (bass boost) , none of our products offer tone control.

7 How will my build look like?

The actual appearance of your build depends on your desired configuration and selection of parts (including the chassis, of course). Pictures shown on the Gallery section are some of our previous works and may or may not necessary reflect your actual build.

8. Do you offer assembled boards?

Yes. However, given the nature of such builds, everything is provided as is, no warranty or support.

9. Can your repair my non-functional build?

Sorry, we don't offer such service.

10. What are the expected ambient temperatures to operate my β22 ("beta 22") or ?

Given the nature of the fully class-A operation of the β22 ("beta 22") or , we expect the ambient temperatures to be no higher than 80 degree Fahrenheit (or 27 degree Celsius), with 55 - 70 degree Fahrenheit (or 13 - 21 degree Celsius) being ideal.

11. Can you build my β22 ("beta 22") with these enclosures decorated with fancy lights, connectors and panels? How about boutique wires from this audiophile-approved company?

It is very unfortunate that a lot of builders use the cheap enclosures, only glorified by fancy panels, lights and boutique connectors.

YBM Audio believes in spending the money where is counts and the heavy duty extruded aluminum enclosures it uses speak for themselves: the front and rear panels are 3mm thick and each with two horizontal brace bars for added strength; the top and bottom panels are 2.5mm thick; the sides are extremely heavy duty extruded.

YBM Audio doesn't offer illuminated push button, nor the lighted volume control ring – the added circuitry could only mean added complexity and cost, but less in reliability.

As for the wires, YBM Audio uses silver plated copper wires with Teflon insulation. These are very high quality wires and unlike most boutique wires, they are able to withstand high heat during soldering (insulation won’t shrink). Best of all, they are color coded – an important feature to reduce mistakes in wiring and allows wire-twisting to minimize noises and interference.

To summarize, YBM Audio believes in less is more but that doesn’t mean our builds are ugly. In fact, as you can see from the photos in the Gallery, only the opposite is true.

12. Can I roll my own op-amps on the M³?

Rolling your op-amps poses some risk, as with all unauthorized modifications, it is discouraged and will void the warranty.