50-watt, fixed biased, valve guitar amplifier head and 2 x 12 combo.
Output Valves: 2 x EL34
Preamp Valves: 3 x ECC83 (12AX7)
Cabinet: 19 mm, lock jointed ply covered in black ‘Lizard’ vinyl with black grille cloth and white piping. Metal bar type side handles.
Speakers: 2 x Celestion ‘Vintage 30’ (combo only)
Transformers: Custom designed and built by one of the UK’s leading manufacturers.
Accessories: All metal footswitch, to enable remote switching of the amplifier’s ‘Boost’ function.
Effects Loop: Series effects loop. Send level is a nominal –6 dBV. Send impedance is 33k ohms. Return impedance is 145k ohms.

Control Operations
Input: I megohm impedance. Suitable for guitars with most types of pickup (the amplifier may, in general however, not give good results with the types of pickup associated with acoustic instruments)
Gain:This controls the amount of preamp gain and hence level of preamp distortion in the amplifier.
Boost: This controls the amount of extra signal sent to the preamp from the first gain stage and the amount of extra distortion in the preamp. This function is useful for heavier rhythm and lead guitar playing.
Bass: This controls the low frequency response of the preamp.
Middle: This controls the midrange frequency response of the preamp.
Treble: This controls the high frequency response of the preamp.
Send: This socket sends a low level signal (-6dBV) from the preamp suitable for driving effects pedals or rack processors.
Return: The output signal from your effects units is reintroduced back into the amplifiers signal path after the preamp, via this socket.
Master: This controls the overall output level of the amplifier and should be adjusted to suit your playing environment.
Mains/Standby: This is a 3-position toggle switch. In the ‘Off’ position, no mains power is sent to the amplifier’s circuitry. In the ‘Standby’ position, the low voltages are switched on and the valve heaters are allowed to warm up before the high voltage is applied to them; allow 30 seconds or so in this position to prolong valve life. In the ‘On’ position, the amplifier is ready to play.

Rear Panel
Mains inlet socket: This accommodates a standard IEC mains lead. The mains fuse is contained within a drawer in this socket and should always be replaced with a fuse of exactly the same type   and rating to reduce the risk of fire or electric shock.
High Tension Fuse Holder: This accommodates the high voltage fuse for the amplifier. If it fails, this may indicate that the output valves have developed a fault. Once again, as with the mains fuse, it must be replaced with a fuse of the same type and rating.
Speaker Sockets: There are a total of 5 speaker sockets: one is connected to the 16 ohm tap, two are connected to the 8 ohm tap, (this will accommodate two 16-ohm speakers or one 8-ohm speaker) and two are connected to the 4-ohm tap, (this will accommodate two 8-ohm speakers or one 4-ohm speaker). It should be noted that only one output tap should be used at any one time. That is to say a speaker load may only be connected to the 16-ohm socket, or one or both 8-ohm sockets, or one or both 4-ohm sockets. No other combination should be connected.
Please Note: To avoid damage to your amplifier, always connect a speaker to the output before switching on.     
Footswitch Socket: This is used to connect the supplied footswitch to the amplifier for remote switching of the ‘Boost’ function and overrides the front panel toggle switch.