Vintage Dynaco Dynakit ST-70 Stereo Vacuum Tube Amplifier Restored Audiophile
Sunday, August 18th, 2024As always, these amps are wonderful but too bad I’m limited in space so I can’t keep all the gear I find! See photos for physical condition of the outside and inside of the amp. FYI, the mono switch is noisy if engaged, and the power switch can cause a small pop if not flipped quickly. They both will eventually need to be replaced but I don’t have the time. Restoration included: HIGH quality F&T electrolytic caps; new coupling caps for the driver board; replaced the selenium rectifier with a diode, and added diodes prior to the rectifier tube for added power supply stability. Swapped out the 7199s with a pair of 6UA8s from Tube Depot back in June. Probably have 10 hours on them. Tubes are not guaranteed as I don’t have a tube tester. Tubes included are 4 mixed EL-34s, and 2 6UA8s, Tung Sol GZ34. Here’s video of the actual unit in my system. Photos demonstrate the physical condition. I’m in Palm Springs, CA 92262.