300B tubes matched pairs tested on Amplitrex tester. See image for test results. Unit has no issues. Very good condition. Sounds as good as it looks. No manuals or original packing materials. Will ship free USA.

Awesome sounding 300B amp and matching preamp. Includes USA Western Electric 300Bs. Includes all 6SN7s US old stock. Glorious sounding on my Focal Aria 948s which are 93db efficient. These were used with Klipsch La Scalas. which are much more efficient to better use the max 11 watts. I heard them and they were amazing. I am very discerning so the only thing I noticed is a tiny loose glass particle in each tube. It hurts nothing but I would want to be told this ahead of time. I checked the tubes on my calibrated TV-7D/U and they are a perfect match at 82.5 where 58 would be the minimum representing 70 % so these are 100%+. Will be double boxed in 3 boxes, one for each amp and one for tubes.

Cary Audio Design CAD-300 Integrated Amplifier combined with Decware Zen se84 and JAMES transformers. AMP is assembled by an electrical engineer using Decware Zen se84 kit, JAMES JS-6123HS 20 Watt Single Ended transformers and WW2 era military power transformer. It has oil capacitors, DC regulated 300B filament supply, voltage delay and is sold with matched pair of Electro Harmonic 300B, pair of 6P15P-EV (EL84) and Sovtek 6N1-P. Amp can be switched to operate in Cary CAD-300 mode or in Decware Zen mode. In Zen mode it uses Decware output transformers and bypass 300B circuit. In Cary CAD-300 mode it uses JAMES JS-6123HS and bypass Decware output transformers. Amp performed flawlessly. No issues. Cosmetically there are a couple of very small dents on the wood base - hardly visible. Both amps very well reviewed, just ask the Google.

Cary Audio Design CAD-300 Integrated Amplifier combined with Decware Zen se84 and JAMES transformers. AMP is assembled by an electrical engineer using Decware Zen se84 kit, JAMES JS-6123HS 20 Watt Single Ended transformers and WW2 era military power transformer. It has oil capacitors, DC regulated 300B filament supply, voltage delay and is sold with matched pair of Electro Harmonic 300B, pair of 6P15P-EV (EL84) and Sovtek 6N1-P. Amp can be switched to operate in Cary CAD-300 mode or in Decware Zen mode. In Zen mode it uses Decware output transformers and bypass 300B circuit. In Cary CAD-300 mode it uses JAMES JS-6123HS and bypass Decware output transformers. Amp performed flawlessly. No issues. Cosmetically there are a couple of very small dents on the wood base - hardly visible. Both amps very well reviewed, just ask the Google.

Cary Audio Design CAD-300 Integrated Amplifier combined with Decware Zen se84 and JAMES transformers. AMP is assembled by an electrical engineer using Decware Zen se84 kit, JAMES JS-6123HS 20 Watt Single Ended transformers and WW2 era military power transformer. It has oil capacitors, DC regulated 300B filament supply, voltage delay and is sold with matched pair of Electro Harmonic 300B, pair of 6P15P-EV (EL84) and Sovtek 6N1-P. Amp can be switched to operate in Cary CAD-300 mode or in Decware Zen mode. In Zen mode it uses Decware output transformers and bypass 300B circuit. In Cary CAD-300 mode it uses JAMES JS-6123HS and bypass Decware output transformers. Amp performed flawlessly. No issues. Cosmetically there are a couple of very small dents on the wood base - hardly visible. Both amps very well reviewed, just ask the Google.