Thursday, October 14, 2021

“3D” - Three channel Class D amplifier

 




















I completed a three channel Class D power amp for another SNA member. 1X 150W and 2X 180W Tripath amp modules, 500W PS with Mundorf MLytic caps - 2X 22,000uf and EVO oils on the input. I sent the amp off without taking any images and had to ask the new owner for a few picks.

"Shadow" - SRPP 12AX7WA Sovtek preamp

 













Just finished this compact tube preamp with Sovtek NOS NIB 7025 (12AX7WA). Again on a jiffy box - “Shadow” - this time is an ironstone epoxy enamel finish. All metal film Rs and PIO output caps with silver plated fine copper hookup wire. Two inputs. SRPP topology. External PS is a Radi0kit kit for 12V and  250V DC. The preamp is absolutely dead quiet. No snap, crackle or pop.