AST Head MkII
The Atomic Space Tone circuit in head form, with a bypassable dedicated Master Volume tube stage and 4/8/16 ohm output switching.
About this amp
AST Head MkII places the acclaimed Atomic Space Tone circuit into a head cabinet and adds a fully bypassable, dedicated tube-stage master volume designed not to leech tone. It runs 6V6 or 6L6 power tubes, keeps the AST’s all-tube reverb and tremolo, and offers two outputs with 4/8/16 ohm selectable impedance for driving external cabinets.
Specs
| Wattage | 18-20W |
|---|---|
| Class | High Class A biased AB |
| Preamp Tubes | 3x 12AX7, 1x 12DW7 |
| Power Tubes | 2x 6V6 (6L6 family compatible) |
| Rectifier | Tube (GZ-34 or NOS 5Y3) |
| Onboard Effects | All-tube spring reverb and tremolo, footswitchable |
| Feature | Fully bypassable tube-stage Master Volume |
| Impedance Options | 4/8/16 ohm selectable, two outputs |
| Dimensions | 17.875in W x 10in H x 9in D |
| Weight | 19 lbs |
Quick answers
- How much does the AST Head MkII cost?
- Swart Amplifiers lists it at $3,094 (USD). Dealer and used prices vary.
- Is the AST Head MkII still available?
- Yes. Swart Amplifiers lists it as a current model that's available to order.
- Who makes the AST Head MkII?
- Swart Amplifiers. Where it's built: 100% valve driven and hand-made in the USA. It's listed here as a tube head amp.