TSL 60 head tube biasing issues. Discussion in 'The Workbench' started by Damusuk, Jun 9, (or at least that bunch)? It is probable that the original tubes are WAY old. But I have heard Marshall (Korg) uses s*** electronics now to save money. I have a TSL 60 watt head. I bought the amp used. 1962: The very first Marshall amps that saw the light of day were called the JTM45 amps. These amps were more or less a copy of the Fender 1959 Tweed Bassman. These amps were built as heads (or tops) separated from the speaker cabinets. Marshall DSL-TSL-JVM "How To" Bias Page PLEASE READ THE TEXT BELOW THAT EXPLAINS THAT YOU DO NOT NEED TO USE A BIAS PROBE!!!!! This video is of a Marshall DSL100 and the bias procedure is the same on TSL100's and 122's and for the JVM but the test points and pots are on the inside of the amp on the JVM. The Marshall JCM2000 TSL602 Combo Amp features clean, crunch, and lead channels, footswitchable with independent volume and gain knobs. Dishes out 60W of pure tube tone to 2 specially designed 12" speakers. Tube complement includes 4 ECC83s in the preamp and 2 EL34 power tubes. Footswitchable reverb has clean and crunch/lead controls. Marshall JCM 2000 TSL 601 60 Watt Combo Amplifier Marshall JCM 2000 TSL. tsl 601 schematic, marshall tsl 601 manual, marshall tsl601 price, marshall tsl. This is a 100 watt tube amp, flavoured after a Marshall with some extra features as well. Schematic included. Marshall JCM 2000 TSL 60 Triple Super Lead 60 watt tube amp with 3 channels This latest addition to the acclaimed JCM2000 series is a smoker! The Marshall TSL 60 amplifier head deals up 60W and an all-tube signal path (4 ECC83s in the preamp, 2 EL34 power tubes). It also features footswitchable spring reverb with separate controls (for clean and crunch/lead). Read and download Marshall Stereo Amplifier TSL60 User's Manual | Page 4 online. Download free Marshall user manuals, owners manuals, instructions, warranties and installation guides, etc.