Purity Audio Design

Special Offer
NOT A BUFFER: The Harmonia v3.1 is a true DHT output stage. Not a cathode follower “buffer” stage. This means you are getting the full presentation of the tube stage rather than only a impedance matching device.
Think of the Harmonia as a tube output stage on any type of tube product but with the wonderful sound of a true DHT. You can chose between 300B or 45/2A3. You can connect up to 4 sources including 3 RCA and one XLR balanced. Outputs consist of one set XLR and 2 set RCA. All inputs and outputs are transformer coupled.
Inputs are handled by a relay based balanced input board.
Passive pass-through allows you to shut the tubes down for home theater use if you so choose.
We have only 2 pieces left in these chassis before we go our full production series.
Please contact if interested or have any questions.
For this small run, we are reducing the cost and including tubes. (Not the tubes shown)

Selling price $4,895

https://purityaudiodesign.com/harmonia-v3-1

The chassis is done in a custom charcoal powder coating. Face plate can be painted and Laser engraved 3/8” thick aluminum or wood/acrylic.

Purity Audio Design Harmonia v3.1. Balanced DHT line output stage with 4 inputs; 3x RCA 1x XLR (all inputs and outputs are transformer coupled). Can be built for 45/2A3 or 300B tubes.
Tubes not included. Passive pass-through allows you to remove the active tube stage.
See the details: www.PurityAudioDesign.com

Promotional Sale:
Purity Audio is offering the next 3 Foundation Series products ordered at a promotional price.

NOTE: as of 3/21/24, We are sold out of the AK4499 DAC

Foundation Series Preamp, FA200 GaN FET 200 watt hybrid amp and the AK4499 tube DAC

Any Foundation piece for $3,495
Will be completed upon ordering.

Www.PurityAudioDesign.com

Prototyping. Teaser.
Snow coming down outside, not much to do on a cold winter Sunday but hit the benches
This is the prototype of our new DHT preamp. We have been working this heavily the past year. Spent a good part of the day testing then listening. Lights off, ears open.
I need to put a few more miles on it then retesting. So far, it’s staying in the system a few days as we’re down to the final tweaks.
General Overview:
Separate power supplies (including transformers for each stage
6922 input stage with CLC solid state power supply
300B output with CLCRC 5AR4 power supply. Choke loaded anodes on 300B tubes
That’s the basics. Complete details will be released soon

Back view of the Purity Audio Design Foundation Series tube preamp with Bluetooth Digital Output and the HA200 Hybrid GaN FET amplifier. Match made in heaven