FRONT PANEL

Active Input - For piezos with preamp incorporated in the guitar.

Passive Input - High Impedance input for piezos without preamp.

Line input - For wide bandwidth instruments (Bass, E. piano, etc...).

Mic input - For dynamic, ribbon or condenser mics.

Piezo Channel - Volume, Bright Switch, Treble, Middle and Bass.

Mic Channel - Volume, High pass filter, Phantom on/off.

Master - Controls the blend of the two channels.

Reverb Volume - Controls the amount of Reverb (Reverb is 100% tube based with Accutronics tank).

Standby switch - Removes high Voltage during standby periods.

Power switch - Power ON/OFF.

BACK PANEL

Fuse - Main fuse 3A.

Fuse HT - Protects output transformer and other sensitive components in the event of a tube short.

Pentode/Triode Switch - Switch between Triode and Pentode (mode Triode has a mellower sound but with half the power than Pentode).

External speaker jack - External speaker cabinet could be connected (Jack is in paral-lel with internal speaker).

Impedance selector switch - Switch between 4 and 8 ohms (Internal speaker is 8 ohms).

Headphone jack - This jack is for dynamic headphones. Impedance is 150 ohms. With a special cable can also be used as post-reverb recording out.

Headphone/Speaker switch - This switch mutes the amplifier. Useful for headphones as well as during recording through send outputs.

Send (Only piezo channel) - Send level is a low impedance cathode follower output, will drive any effect of the market. Can be used as a preamp/recording out or to drive another amp. Send is pre-reverb.

Send level (Only piezo channel) - Controls the amount of signal to the effects as well as other destinations (Power amp, computer, mixer, etc...).

Return (Only piezo channel) - Return effects input. This is a power amp input.

Mic Out -Balanced XLR Mic channel output, impedance 600 Ohm.

CHN Mute - This switch mute the path of the mic channel to the power amp so the signal can be send to a monitor system , PA, etc... and processed externally.

TECHNICAL

Topology - Push-Pull fixed bias with a pair of matched Svetlana 6L6. Bias can be set externally by a military style blocking potentiometer, Quiescent current of the tube is monitored through a Jack.

Triode mode - 25 Watt.

Pentode mode - 50 Watt.

Headphones - 1 x 6922.

Clean channel 1 x ECC83.

Mic Channel 1 x ECC83 1 x ECC82.

Phase Inverter - 1 x ECC81.

Loop - 1 x ECC81.

Resistors - 1% low noise Mixed Kiwame carbon and metal film.

Capacitors - Electrolytics (Tesla, Sprague) Polyprop. (SBE, SCR, Hovland), Silver mica.

Input and output Jacks - Switchcraft /Neutrik.

Switches - Carling.

Output Transformer - wide bandwidth with interleaved windings.

Mic transformer - Cinemag.

Speaker - 400 watt cast frame Eminence (same response as the discontinued Electro - voice EVM12L).

Cabinet wood - Selected American Ash or hard maple.

SIZE AND WEIGHT

Height - 51 cm (19.89")
Width - 47 cm (18.33")
Depth - 30 cm (11.7")

Weight - 30 Kg (66 lbs)

PACKAGE CONTENT

AMPLIFIER 4
COVER
OWNERS MANUAL
BIAS ADJUSTEMENT CABLE
SPARE FUSES SET
MAINS CABLE

optional: FLIGHT CASE