Altec 1567a mixerComplete electronics rebuild. Custom Cinemag input transformers. Burned in 24 hours. I've misplaced the knobs I bought for it, so I'm including a set of Bakelite RCA knobs, so consider that when bidding when bidding. Replacements are usually available on eBay. The Black Keys use two 1567a mixers when recording vocals and guitars for that analog mojo Motown used one, but not exclusively, on many recordings. The Altec 1567a doesn't come on the market often. Google Altec 1567a and you probably be shocked by the prices.If you are not familiar with this model, please do your research before bidding. Thanks.