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?
9. Do you offer assembled boards?
10. Can your repair my non-functional build?
11. What are the expected ambient temperatures to operate my β22 ("beta 22") or 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.

9. Do you offer assembled boards?

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

10. Can your repair my non-functional build?

Sorry, we don't offer such service.

11. 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.