RE: No, but I have heard more than one of them...

SET Asylum

Single Ended Triodes (SETs), the ultimate tube lovers dream.

Posted by 91derlust (A) on October 4, 2020 at 21:49:19

In Reply to: No, but I have heard more than one of them... posted by Ivan303 on October 4, 2020 at 06:45:32:

A little clarification. The "Ultrapath" element of the DRD design changes the current path and apparently removes some of the PS and cathode bypass capacitor flavour. The ultrapath capacitor is important and the amp stage has less, not more, PSRR because PS noise is injected into the cathode then amplified. If your PS has sufficiently low noise and you can find a good-sounding ultrapath capacitor of sufficiently high voltage, go for it. A partial ultrapath (or WE connection) type arrangement with correctly-size ultrapath capacitor can improve PSRR and apparently can sound rather nice. Or just use the traditional approach with a high-quality cathode bypass capacitor (does not need to be high voltage) and a decent PS cap.

The main benefit, as I see it, of DRD - and most monkey-style - amps is the direct-coupling with protection of the output tube from failure of the input tube.

"Confusion of goals and perfection of means seems to characterise our age." Albert Einstein

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Follow Ups Full Thread

Topic - Has anyone built a DRD Amp - panheadchopper 14:53:24 10/3/20 (14)

RE: Yes - deafbykhorns 11:11:57 10/9/20 (2)

RE: Yes - drummerwill 17:05:33 10/9/20 (1)

RE: Yes - deafbykhorns 12:48:36 10/12/20 (0)

Yes 2 pairs - A pair of DRD45s and a pair of DRD45 Starchiefs .............. - Cut-Throat 07:48:22 10/4/20 (4)

RE: Yes 2 pairs - A pair of DRD45s and a pair of DRD45 Starchiefs .............. - panheadchopper 08:04:35 10/4/20 (3)

RE: Yes 2 pairs - A pair of DRD45s and a pair of DRD45 Starchiefs .............. - Sidewinder 21:42:34 10/4/20 (1)

Here you go .................. - Cut-Throat 05:33:54 10/5/20 (0)

Thanks! And here is the Finished Product, which are my Main Amps Today........ - Cut-Throat 08:10:21 10/4/20 (0)

No, but I have heard more than one of them... - Ivan303 06:45:32 10/4/20 (5)

RE: No, but I have heard more than one of them... - 91derlust 10/4/2021:49:19 10/4/20 (0)

RE: No, but I have heard more than one of them... - panheadchopper 07:08:01 10/4/20 (3)

RE: No, but I have heard more than one of them... - panheadchopper 08:25:03 10/4/20 (2)

RE: No, but I have heard more than one of them... - panheadchopper 09:20:13 10/4/20 (1)

RE: No, but I have heard more than one of them... - panheadchopper 09:21:15 10/4/20 (0)

Follow Ups

RE: No, but I have heard more than one of them... - 91derlust 10/4/2021:49:19 10/4/20 (0)

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