Both amps have been gone over and had all tubes checked, all coupling and power supply filter caps replaced where needed (please view photos). Replaced the RCA input jack to modern gold plated ones. 5- Make sure you have read the entire ad, viewed all photos, accept and understand all terms stated in the ad. Thanks for looking and stay tuned for more rare LP's and vintage electronics. There is no Sonotone label on these tubes only Siemens "Made In Germany", sorry for typing error.The item "EICO EH-22 MONO BLOCK POWER AMPLIFIERS 6L6GC TUBES! CLEAN" is in sale since Tuesday, June 1, 2021. This item is in the category "Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps". The seller is "210lb" and is located in Chadds Ford, Pennsylvania. This item can be shipped to United States.