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THD BiValve 0-30W amplifier, use any valve combination you like!
Estimated price for orientation: 625 $
Category: Guitar Amplifiers
Class:
Description Condition: Used: An item that has been used previously. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or store return that has been used. See the seller’s listing for full details and description of any imperfections. See all condition definitions- opens in a new window or tab ... Read moreabout the condition
This is a THD BiValve 30, the bigger brother to the more common UniValve. THD didn't seem to make these for very long - my guess is that they specced so much good stuff that they didn't make much money on each one sold. It has an FX loop, transformer-isolated Line out, built-in THD HotPlate attenuator, Hi/Lo voltage switch, 2/4/8/16-ohm outputs.What makes this amplifier special is that you can use almost any combination of preamp and power amp valves. Just swap them in - no fuss, no rebiasing. You are totally free to mix and match the valves, as the second photo above shows. There's no biasing to do, just switch off and then use an oven glove for valve-swapping. The only thing to bear in mind that if you use 6V6 power valves, you must use the Low Voltage switch (you can use this setting with bigger valves, too, if you want to brown out the sound some more). It's almost impossible to describe the tonal range, but I'll try. Plug into the low-gain input and you are using just one preamp valve and if you keep to a 12AY7 (etc) and run into bigger octal valves (say 6L6s), it's very clean, sort of 'spanky'. Use the higher gain input and now you can use two ECC83s and run into EL34s in the power stage for way more gain. We're not into djent metal, but just about any popular classic/hard rock. And there are tweedy tones in-between with other valve combinations.You can read .And here's a link to.This rare amp was sourced from the USA, so I will include a stepdown transformer for use on UK mains (200W-rated runs nice and cool).Also forgot to mention: I will ship this with a set of brand-new JJ valves: 2x ECC83S and 2x 6L6.
Description
| Condition: | Used: An item that has been used previously. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or store return that has been used. See the seller’s listing for full details and description of any imperfections. See all condition definitions- opens in a new window or tab ... Read moreabout the condition |
This is a THD BiValve 30, the bigger brother to the more common UniValve. THD didn't seem to make these for very long - my guess is that they specced so much good stuff that they didn't make much money on each one sold. It has an FX loop, transformer-isolated Line out, built-in THD HotPlate attenuator, Hi/Lo voltage switch, 2/4/8/16-ohm outputs.What makes this amplifier special is that you can use almost any combination of preamp and power amp valves. Just swap them in - no fuss, no rebiasing. You are totally free to mix and match the valves, as the second photo above shows. There's no biasing to do, just switch off and then use an oven glove for valve-swapping. The only thing to bear in mind that if you use 6V6 power valves, you must use the Low Voltage switch (you can use this setting with bigger valves, too, if you want to brown out the sound some more). It's almost impossible to describe the tonal range, but I'll try. Plug into the low-gain input and you are using just one preamp valve and if you keep to a 12AY7 (etc) and run into bigger octal valves (say 6L6s), it's very clean, sort of 'spanky'. Use the higher gain input and now you can use two ECC83s and run into EL34s in the power stage for way more gain. We're not into djent metal, but just about any popular classic/hard rock. And there are tweedy tones in-between with other valve combinations.You can read .And here's a link to.This rare amp was sourced from the USA, so I will include a stepdown transformer for use on UK mains (200W-rated runs nice and cool).Also forgot to mention: I will ship this with a set of brand-new JJ valves: 2x ECC83S and 2x 6L6.