This is good copy. Thanks! As to question 4, others charge the customer, at cost, for the broken parts inside the amps, hence I assumed you had a sim...

Alan, I noticed you have a 5 year warranty standard and a 10-year as an extra option for a very reasonable price. Your competitors only offer 2 years,...

This is truly amazing, Alan. Thank you for being so open about the true performance of your amps. I'm tired of reading specs from competitor amps whic...

Alan March wrote: random amp at 23dB. N=-111.4dB 261 29dB. N=-106.7dB 260 Difference 4.7dB. The impedance is something I would have to check. The...

I appreciate the thoughtful answers. Thanks! Care to give a rough figure of what the THDN will be in the 29dB gain mode, using your current sources? ...

Bravo Alan ... I appreciate your data-driven responses! It's truly amazing what your "ultra buffer" can do. I expected a 3-4 dB penalty between the tw...

Hi Alan...would it be possible to produce a 5W spectrum plot (similar to the one in the main page) but for RCA outputs with the 29dB gain option? Sec...

Hey Alan, I looked closely at the 9040BA module and noticed it has an OPA1632 differential-in differential-out amplifier. Do you know why it would be ...

Alan March wrote: Yep, another design that will have limited power output in 110v territories. It won't do 450w x4 into 4 ohms as claimed let alone 5...

Maybe another possible MCh design option could be like the one below from Audiophonics (1ET6525SA-based):

Alan March wrote: Not surprised as it will be trying to make the most of the limited PSU capacity. 1600 watts is only 230 watts per channel if all dri...

Alan March wrote: If that were the case (to be clear its not) it could not drive both channels to max power on a bench test. The PSU has plenty of cap...

Alan March wrote: 1. Linear amps with unregulated PSUs. 2. Yep Ok, but if both left/right channels are in phase (as is in most amplifier designs) a...

Alan March wrote: 1. No. Our PSU doesn't suffer bus pumping. 2. No. Differential. 3. Sorry we dont discuss design detail 😉 1. Though Purifi used out...

@Alan ... Purify recommends the following, regarding the 1ET6525 module: 1. I know it may not be needed for the P801(?) but is the P482 also runni...