Single Ended 300B amp

The amp is unorthodox in that it's built on four chassis. One chassis is the power supply for the front end. [Not shown] The front end is on a second chassis and here are the output stages.

I finally rebuilt the pre-amp.

The line stage tube (on right) has been replaced with an autoformer volume control.

The second stage of the phono preamp (6sn7, middle tube) has been replaced with a 7119.

And put some trim on the driver stage chassis. [ The 6sn7s have been replaced with 5687s ]

Here is my DIY SAMA for the HW19 Mk3 turntable. It's full of lead.

The JBL 2231 subwoofers are bi-amped with a SS amp and an electronic low pass filter, 12db per octave @ 190Hz.

That's the VPI HW-19 MK3 with a SME Type 4 and a Sony SACD player. The power supplies for the pre-amp and the power amp driver stages are on the other side of the wall in a shop area. The output chassis are just to the right.