[amb]

The opamp in the Gilmore amps is a DC servo, for controlling the output DC offset. It is not used for audio amplification.

 

[KarateKid]

Thanks guys for clarifying!

 

[Dreadhead]

Quote:

Originally Posted by amb /img/forum/go_quote.gif It boils down to this... when I designed the β22, I wanted one amp that would be able to drive any dynamic headphone to its fullest potential without compromise, and even serve as a low-power but very high quality power amp for speakers. It would also be an outstanding preamp for its low noise and the ability to drive long interconnect cables without quality loss. Since someone brought up Ferrai vs. BMW, an analogy in this case might be an Audi RS4. It could run with the best on the track, yet has room for passengers and serve well as your daily commute/grocery-getter, and all-wheel drive when the roads get loose or the weather turns foul. Sure, there are singular-purpose cars out there that could match the RS4 in specific areas, but none as the all-rounder that it is. There are many excellent headphone amps out there, no question. But which ones push the envelope in terms of voltage swing, output current, distortion and noise, bandwidth and speed, and all of the other metrics as far as the β22? When we're talking about a reference-class amp, merely "good enough" isn't. Yes, I drive Audis.

Well lets not get into cars..... that's a rabbit hole of an entirely different depth.

I do get your point and I think your amp is an amazing design. Maybe some day I'll have a pair of phones that require the amazing amount of power that you put out but I doubt it.

I look forward to the design for the 200W headphone amp in the near future...

 

[n_maher]

Quote:

Originally Posted by Dreadhead /img/forum/go_quote.gif Actually I contacted him (Stephen at Rockohpper) about a month ago and he sent me a firm quote for a 2 sigma22 board beta22 setup for under $1700 but I backed out because I had not heard the amp and 3 months is a long time to wait. I would highly recommend people contact him before stating that he's not doing stuff......

Yeah, I guess your month old email is probably more accurate than the phone conversation I had with him a couple nights ago...

 

[Dreadhead]

Quote:

Originally Posted by n_maher /img/forum/go_quote.gif Yeah, I guess your month old email is probably more accurate than the phone conversation I had with him a couple nights ago...

Well I guess not.... next time I make a statement based on true evidence I'll make sure to run it by you.. sorry.

 

[n_maher]

Quote:

Originally Posted by Dreadhead /img/forum/go_quote.gif Well I guess not.... next time I make a statement based on true evidence I'll make sure to run it by you.. sorry.

You don't have to run anything by me, but you did assume that I didn't know what I was talking about, which was incorrect. So next time, maybe don't assume?