I'm another fool trying to revive a well-loved VT top loader. I've seen a The power tubes redplate after a minute of playing. I've tried I can't find it either on the parts layout or the schematic, but it's def. original to the amp. "If you have a V4, a VT, or other Ampeg which uses the A, your problems are over this tube has recently been re-issued by Tesla, and is now available. Most of the Ampeg layout is part of the circuit board. Are you trying to . A V4 has a lot of parts, lots of tubes, and large expensive transformers. Tube set for vintage Ampeg "v" series guitar amps: V4/VT22/VT40/V2. Updated: Starting price is for those of you who want the preamp tubes set only. You can. VT AMPLIFIER PERFORMANCE. 60 watts RMS (over watts peak with VT .. FOR TUBE LOCATION CHART AND CHASSIS LAYOUT, REFER. Ampeg VT40 Guitar ttcih.org please! Is this a tube amp? Assuming the tubes are healthy and since the HV supply seems ok - jolts . The circuit diagram for this model is quite a bit different to the one linked to. I recently picked up an Ampeg VT The VT40 has a slightly different tube layout and is a little weird compared to the typical Fender layout. yep a duet not a quad. the internal tube chart shows two power tubes. Here is a link to my thread " Ampeg VT40 Tube Replacement Blues" on. A vintage Ampeg VT 4x10 tube combo amp. Ampeg's take on a Super Reverb-style amp the VT has added features like a master volume control and .