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Ashdown Klystron 1000Watt head

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Selling my Ashdown Klystron in Excellent condition and with flight case. Postage at buyers expense and if collected I'm location in Clitheroe, Lancashire. 

About The Klystron 1000 Head:

Proudly built in the UK, the Classic Series is Ashdown’s flagship bass amp range. Comprising of 500 and 1000-watt Klystron heads, a selection of cabinets and a range of 500-Watt combos, the Classics are about doing everything better – more volume, more dynamics, an extended frequency range and greater versatility.

The 575 + 575-Watt Klystron 1000 head features a single input is switchable for passive and active instruments with a blend of solid state and dual triode tube preamps stages. Three straightforward rotary tone controls provide 20dB of cut and boost at 60Hz, 660Hz and 5kHz, and are supplemented by two pairs of additional sliders giving 15dB cut and boost at 180Hz, 340Hz, 1.3kHz and 2.6kHz. 

A built-in dual band compressor acts separately on the high and low frequency components of the signal to provide precise control, while the on-board sub-harmonic generator turns the Classics into powerhouses of tone.


Power Output (RMS) 575 + 575W
Frequency Response  -3dB at 17Hz and 30kHz
Speaker Outputs Minimum impedance 4 Ohms
High Instrument Input Impedance 3.9m Ohms, input range 150mV - 20V p-p
Low Instrument Input Impedance 10k Ohms, input range 300mV - 40V p-p
Line Input Impedance 22k Ohms, input level 0dBu nominal
Line Output Impedance 10k Ohms, level 0dBu nominal
DI Output 600 ohms balanced, level -20dBu nominal
Tuner Output Impedance 1k Ohms, level 0dBu nominal
EQ Bass +/-15dB @ 45Hz
Middle +/-15dB @ 660Hz
Treble +/-15dB @ 7kHz shelving
Slider 1 +/-15dB @ 110Hz
Slider 2 +/-15dB @ 340Hz
Slider 3 +/-15dB @ 1.3kHz
Slider 4 +/-15dB @ 2.6kHz
Shape (Push Flat) +8dB @ 50Hz & 4kHz, -8dB @ 400Hz, filter slope - 6dB/octave
Effects Send Impedance 22k Ohms, level 0dBu nominal
Effects Return Impedance 22k Ohms, input level 0dBu nominal
H x W x D (mm) 340 x 610 x 240
Weight (kg) 24







Edited by rjmbass

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