Tom Bavis wrote:
What is the supply voltage? ......... Pins 1 & 8 will be jumpered together if it was EL34s
You nailed it Tom. Pins 1 and 8 are indeed tied together. So therefore this is likely an Eico HF-35 clone with some variations. The TO-350 seems a bit of overkill in this circuit. However, if it can handle 100 watts, up to 175 mA per tube and within 1 dB from 7 Hz to 70KHz, 35 watts should be a breeze and even better quality.
A no load test of the power transformer showed only 385 VAC per side, so voltage is not extreme. At the same swap, picked up a Peerless Altec-Lansing R-800-A power transformer that is rated at 300 mA at 400-0-400. Unloaded, it did not draw current until it hit 120 VAC input. That gives me an option if I want to change power transformer. The nice thing about a homebrew is being able to modify it without feeling like you've destroyed an antique.
Sorry about the image size Sal. Still getting the hang of taming Picasa to be a source for my ARF pics. And yes, am somewhat aware of audiophile demand for Acrosound.