Single-ended class A amps were used in many lower power 1950s-60s Fender Tweed and Blackface amps and in Vox's AC-4, which also used the EL84 tube. The output stage is a single-ended class A power amp. Additionally, a boost switch increases the gain and frequency response of the amp providing additional tonal flexibility. The tone circuit uses a modified passive Baxandall/James circuit (Bass and Treble controls) similar to the type of tone stacks used in the original Ampeg, Orange, and some Dr. This amp is very quiet (background noise and hum) and breaks up nicely at reasonable volume levels. Estimated Price: 3800: Tube Configuration: 5 x 12AX7, 4 x E元4: Number of Channels: 3: Output Power: 100 watts: Configuration: Amp head: Additional Controls: Thump. All of the tubes are the original vintage 1960s tubes. 12AX7s are the most common preamp tubes used in guitar amplifiers such as Fender, Mesa Boogie, and Marshall. Z, Matchless, and other boutique amplifiers. These tubes were used in 1960s vintage VOX amps, and are still used in some Dr. The first input uses an EF86 (6267) tube. 5-watt output through a 4-ohm, 5-watt loudspeaker. The 2 inputs however employ separate, and different, input stage tubes and therefore sound very different. the mono block tube amplifiers will work with a number of octal tubes (KT77. There are 2 instruments inputs which share the common volume and tone controls. Where practical the original vintage components, including the tubes, have been kept. The amplifier circuitry has been optimized to specifically serve as a guitar amp rather than as hi-fi equipment. We offer our Trinity built boards for your DIY. Can be fitted to any guitar tube amplifier. A redesigned 5E3 layout helps reduce hum and noise. This amp was designed and constructed using the basic foundation of a 1960s (Akai M8) Roberts 770X tube reel to reel tape recorder. The Tweed produces about 15 watts into 8 Ohms using two 6V6 output tubes and uses a replica Fender 108 4, 8 ohm design Output transformer built by Heyboer. A 5 watt rehearsal/studio tube guitar amp converted from a 1960s tape deck.

5 watt tube amp