Short Circuit Guitar Preamp

Custom designed by Alan McCulloch this 2 channel guitar pre-amp features a clean and an overdrive channel. The clean channel has a basic volume, lo eq and hi eq whereas the overdrive channel has gain, volume, master volume, bass, middle, treble and hi controls. Short Circuit Guitar Preamp
ie-icon Preamp circuit diagram

Short Circuit Power Amp

Custom designed by Alan McCulloch this 15 watt power amplifier uses 4 * 6K6GT valves and a GZ34 recifier. The amp has 8Ω and 16Ω speaker taps. Short Circuit Power Amp

Mesa/Boogie Studio Preamp

The Mesa Boogie Studio Preamp is based on the classic Mesa Boogie Mark IIC+ amplifier, but in the popular rackmountable form of the late 1980s. It's a 2U tube preamp and has 5 preamp tubes; 4 ECC83 (12AX7) valves and one ECC81 (12AT7) to drive the spreing reverb. It's got two switchable channels, rhythm and lead, as well as the classic 5 band graphic EQ, onboard spring reverb, a high quality effects loop, recording outs and two outputs to run to a stereo power amplifier. Mesa/Boogie Studio Preamp
doc-icon Operating Manual
ie-icon Mesa/Boogie website

Mesa/Boogie Fifty/Fifty

The Mesa/Boogie Fifty/Fifty is a stereo valve power amp, specifically for guitar use. Made in California it uses 6L6 valves for its two independent channels. It features volume and presence controls for each channel and a very useful hi-lo power switch that switches it from 50 watts to 15 watts to allow for earlier onset of valve distortion whilst recording. Mesa/Boogie Fifty/Fifty
doc-icon Operating Manual
ie-icon Mesa/Boogie website

Stageline STA-200D

  • Class D
  • Silent operation due to fanless cooling concept
  • High power reserves due to generously dimensioned toroidal core transformer
  • High-efficiency power amplifiers
  • 3.5 mm connection with switchable sensitivity on the front panel
  • 4 x RCA input
  • 2 x speaker output
  • 4 x terminal strip output
  • 2 level controls
  • Protected against short circuit, overvoltage and overtemperature
  • LEDs for indicating power, overload (clip), protect and overheating
  • Extra slim and robust design, 1 RS
  • Power rating at 4 Ohm 2 x 125 WRMS
  • Power rating at 8 Ohm 2 x 75 WRMS
  • Power rating at 100 V
  • Peak music power output (PMAX) 300 WMAX
  • Inputs 1 V/23 KOhm (RCA)
  • 90 mV-1 V (jack)
  • Frequency range 20-20,000 Hz
Stageline STA-200D
ie-icon STA-200D Manual (0.5Mb)

Sugden A48 III (Now SOLD)

The Sugden A48 III was made in Heckmondwyke, Yorkshire, England. It is a minimalist design featuring an input selector, mono, mute and tape monitor buttons, balance and volume. It has a headphone socket on the fascia which is activated (speakers also muted) by a switch on the rear. Sugden A48 III
ie-icon A48 User Manual (0.5Mb)
ie-icon A48 Promotional literature (3.5Mb)
ie-icon J.E. Sugden web site