Selling a fantastic sounding and well-built OTL with a dual-mono circuit. Original listing here with specs: https://www.etsy.com/listing/1039573339/eufonika-model-h7m-headphone-amplifier

I purchased this secondhand about 1.5 years ago, mostly has been in storage for the past several months as I re-organized my setup. Previous owned upgraded the RCA inputs to Audio Note silver-plated sockets (https://partsconnexion.com/products/audio-note-an-cs-rca-chassis-mount-socket-red).

Tested the amp this week with all tubes and everything is sounding great. There is some very mild hum with adapted tubes when there is no music playing, but inaudible with music. With the stock Russian tubes (6N1P and 6N13S), it is essentially silent.

Stock tubes include:

• 2x Russian 6N13S
• 4x Russian 6N1P

Upgraded old-stock tubes include:

• 4x GEC CV4079 with 2x adapters (a pair of these adapt into a 6AS7G)
• 4x RCA 6080 from the 1950s

Sorry for the confusion with the input/drive tube pictures. I have some adapters to adapt 5670/396A/2C51 and 12A*7 tubes to 6N1P/6922, but I am planning to keep those for now. Let me know if you do have interest in purchasing those adapters and any of my extra tubes for an additional cost (those adapters were fairly expensive).

Price = $400 + calculated shipping (I will cover PayPal fees)