• The swap meet forum is for private non-commercial transactions. Only unmoderated members can post here.

    diyAudio provides this forum for the convenience of our members, but makes no warranty nor assumes any responsibility. We do not vet any members. Use of this facility is at your own risk. Customers can post any issues in those threads as long as it is done in a civil manner. All diyAudio rules about conduct apply and will be enforced.

300B Amplifier For Sale

Status
Not open for further replies.
Up for sale is a 300B amplifier. The amplifier is powered by a 500W Toroidal Transformer.
Full wave rectification is made by two 6CJ3 JJ power tanks and AmpOhm Polypropylene capacitor. Choke metal is the same as the output transformers and the power supply configuration is CLC RC.
Input tubes are RCA 12SN7GT all resistors are Kiwame, 300B grid resistor are Takman.
300B cathode resistor is MILLS Non-Inductive Wire Wound 1% Cathode capacitors are all ELNA Silmic II interstage capacitors are Mundorf Supreme.
Power tubes are JJ 300B.
Two fuses are protecting the amplifier, one in the power transformer primary and one in the HV rail.
All Teflon Sockets
Regulated 300B power supply using LT1085 as a constant current.

Output transformers are 5k to 8ohm
Primary has 45 Henries and each output transformer weights 6kg GOSS 0.3mm
Transformers are custom made by me i own a winding shop.

Volume control is a 23 step attenuator with high precision Dale resistors.

Amplifier will come with a second pair of 6CJ3 rectifier tubes and a second pair of Sylvania 12SN7GT

Price is 1400$ you can contact me by sending me a PM i will gladly answer any question.

Thanks for watching.






Sold
 
Last edited:
Status
Not open for further replies.