For Sale: Last 45/2A3 Harmonia Jr DHT Output Stage

Started by Response Audio, May 17, 2026, 01:20:16 PM

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Response Audio

We are in the process of developing new chassis for 2026/27. This will include the Harmonia, Anniversary Edition Reference Preamp and Hybrid GaN FET amplifier.
Here is the last build of the Harmonia Jr in this chassis. This unit can use 45 or 2A3 tubes or 2.5V 300B. Can be used as a DHT preamplifier. Please see our disclaimer for preamplifier use.
Please visit our web page for full details on this build.
Asking $2,695

Full Details



Response Audio NY
Custom Vacuum Tube Deaign
www.ResponseAudioNY.com

Musica Bella Harmonia Jr  as 45 tube preamp
Musica Bella Master DHT/GaN FET 300w Hybrid Amplifier.
Musica Bella Perfetto Interconnect Cables
Musica Bella Bella Speaker cable.

Response Audio

The last piece with a gain control and for 45,2A3 only. (Can be set up to also accept 300B tubes at slight additional cost)  New units will no longer utilize a gain control. The Harmonia is designed as a DHT output stage to connect up to three source components to. Bring that organic DHT sound into your life with a single component that will not compromise the dynamics and authority of a high power solid state or tube system.
Grab this one for only $2,500


The new chassis arrangement. 45, 2A3, 300B. Amazing with Western Electric 300B :drool:


https://responseaudiony.com/harmonia-jr

Response Audio NY
Custom Vacuum Tube Deaign
www.ResponseAudioNY.com

Musica Bella Harmonia Jr  as 45 tube preamp
Musica Bella Master DHT/GaN FET 300w Hybrid Amplifier.
Musica Bella Perfetto Interconnect Cables
Musica Bella Bella Speaker cable.

mresseguie

Hello.

I've looked at your DHT output stage a couple of times now, and I have a question or two. Is this generally used (or intended to be used) with SS gear? If someone had a tube preamp (for example) which is already imparting that tube bloom, how much impact would your DHT Output Stage add?

Michael
Daedalus Audio Apollos; Fritz Loudspeakers LS/5-R
SW1X NOS DAC III BAL/SPL; Holo Spring3 KTE
Don Sachs Model 2 preamp
Don Sachs dual mono 300b; Nuprime Evolution STA
Hapa loom
PI Audio UberBUSS, DigiBUSS, Uber-MiniBUS