This series of amplifiers, presented here, is available for all lovers of tube-based audio equipment. Similar to the Spectro-Amplifier, they are freely configurable and can be tailored to personal preferences.

Output Power:

Model  A1616      2 x 16W      Power Tube EL84

Model  A3030      2 x 30W      Power Tube 5881

Model  A3535      2 x 35W      Power Tube EL34

Outputs:

4 ohms and 8 ohms terminal block
An impedance selector switch is also available.
Alternative output sockets available on request.

Inputs:

1 stereo input (RCA) for use as a power amplifier  or:
4 stereo inputs (RCA) as an integrated amplifier
On request, high-level inputs can also be replaced by phono inputs (MM, MC). (max. 2)
The integrated RIAA preamp (optional) has a transistorised design (discrete J-Fet circuit).
Other input sockets and levels available on request.

Tone Control

Optionally, there is an active 2-band (bass, treble) tone control that can be switched off (true bypass).

Design

All amplifiers can be constructed in either an open design or a closed cabinet. Closed cabinets feature a plexiglass panel at the front. The side panels are usually made of wood (ash, maple, pear, cherry, etc.). Special requests can also be accommodated here.

High quality phono preamplifier module as an extension for connecting a turntable to amplifiers that do not have a phono input.  Can be connected to any high-level input.

RIAA preamplifiers in different designs

Discrete low-noise circuit design with J-FET inputs
Switchable between moving magnet and moving coil

Input sensitivity:   MM  5.5mV (50 kOhm), MC  0.55mV(500 Ohm) 

                            - for 250mV (-10dBU) output level at 1kHz

Deviation of the RIAA filter curve:   < +/- 0.4dB
Power supply via an external 12V transformer power supply unit