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RE: Buckeye Purifi Eigentakt 1ET9040BA monoblock power amplifier

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In Reply to: RE: Buckeye Purifi Eigentakt 1ET9040BA monoblock power amplifier posted by emailtim on December 19, 2024 at 17:16:07

I am intrigued by reports of Class-D amps. I use a Hypex plate amp for the bass of my semi-active DIY speakers (Troels Gravesen's superb MUN-17), and this simply works as it should.

When, out of pure curiosity, I replaced the push-pull 300B amp driving the mid and treble with the other amp in the Hypex module, I was disappointed, though. It certainly sounded very good, but missed a lot of the "magic" of the DHT amplifier. I assumed that this was because I couldn't bypass the digital filter circuitry in the plate amp, which may not have been as transparent as the amplifier itself.

If I could find a compact amp that was as subjectively satisfying as my valve amplifier, I would certainly welcome the convenience and reduced power conception. Has anyone directly compared a Hypex/Purifi Class-D amplifier with a good DHT amplifier?

Alex

Follow Ups:

RE: Buckeye Purifi Eigentakt 1ET9040BA monoblock power amplifier - emailtim 20:59:35 12/27/24 (3)
Class D is not going to give you tube coloration unless you explicitly add it. VTV has a tube buffer, but it isn't cheap.

Designed by Andrew Sparks of Sparkos labs, the buffer features a direct coupled dual triode driving a four transistor Wilson current mirror. The output of the current mirror feeds an I to V converter stage featuring a discrete opamp (of your choice). The board is compatible with almost any dual (or two single) opamps.

There are NO capacitors in the signal path.
The VTV Tube Buffer is compatible with all NCore and Purifi models and installs just like the standard VTV Custom Buffer.
.

2022/03/30 Historical Records CENSORED
- VTV Tube Buffer (Open in New Window)
- RE: Buckeye Purifi Eigentakt 1ET9040BA monoblock power amplifier - Alex M 13:16:57 12/28/24 (2)
  Thanks for the suggestion. I don't need a tube buffer, though, since I use a very low distortion differential tube preamp (Vacuum State RTP3C).
  
  Alex
  - That Preamp should sound.... - Cougar 15:28:23 12/28/24 (1)
    Really nice with one of the popular Class D amps. My Hypex Nilai's sound great with my Masterpiece 300b preamp.
    - RE: That Preamp should sound.... - Alex M 10:38:02 12/30/24 (0)
      It would only work at its best into an amp with a balanced input, though. My current 300B amp is 100% differential. I feed my Hypex plate amps through the XLR connectors too.
      
      Alex

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