Tungsram PV4200 rectifier, Tungsram El6 and double subminiature tubes instead of the 6N1P. All with our TP adapters. It will improve the sound in every possible way:)
The impact is huge! Almost a component upgrade.
I must admit that I am a big QSA fan. I have been using QSA products for years. I started with fuses, then as soon as Anas launched the Lanedri cable portfolio, I immediately ordered some power, dc and dac cables from him. The next step was the Ultimatum Infinity speaker cable last year, which...
If anyone wants to experiment with tubes in the Posseidon or Pacific we discovered a new 6N1P substitution tube. Game changer:) Ultra linear, ultra low noise and so much fun to listen.