Tag: 4-65a SE Amp

A collection of latest images

After upgrading my 26 preamp, turntable and adjusted the system to a great sounding state. Looking forward to play many records now…

HT power supplies
Latest System
26 preamp and 4-65a SE Amplifier
DHT filament supplies (and many of them)
26 and bigger brother 46
Reddish 4-65a
26 preamp Gen3
Lenco turntable
Setting up to play in the evening

 

4-65A SE Amp: first tweaks

As discussed previously, I replaced the gyrator’s polypropylene caps with better ones I had at hand which are 1uF 450Vdc Mundorf Mcap EVO Silver Gold Oil Cap (EVOSGO-080). I should look at lower value. A 220nF or even 100nF one should provide a 1Hz -3dB point with the 4M7 resistor. Anyway, the sound is a tad better in the bass I would say. Nice upgrade but should listen to it more to find what other changes has this capacitor made to the amp:

Replacing the capacitors
Mu-follower gyrator boards finished