The Dynaco ST-70 is one of the most popular tube amplifiers ever. First released in 1959, it's still sought after by hi-fi ...

The amplifier is designed around the ECL82 tube, which includes both a triode and a pentode in one package. The ECL82 is practically an amplifier in a tube: it was designed for low-cost ...

[Mikremk] demonstrates this with a simple but effective amplifier using a PCL82 triode-pentode. It’s a conventional tube amplifier circuit in which the triode is a preamplifier for the pentode ...

See vacuum tube. ----- VACUUM TUBES -----Triode Pentode Elements Diode Tetrode Cathode X X X X Plate X X X X Control grid X X X Screen grid X X Suppressor grid X THIS DEFINITION IS FOR PERSONAL ...

Unlike typical full/half and triode/pentode modes found on many modern amps, the SL68 features Hi (full 100-watt) and Lo (Variac mode) settings accessible via the power switch. The secret to ...

The SP2000T was a follow-on to the SP2000 that incorporates a pair of sub-miniature pentode tubes and gives the user the option of the SP2000 signature or a bit more of an analog sound by adding the ...