Ashdown Klystron 500

ABM500 EVO III in a slightly different form factor.  Not many of these were made and I would guess even fewer made it to the US as I’ve never seen another one in person.

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Power Output (RMS) 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 pp 

Low Instrument Input Impedance 10k Ohms, input range 300mV - 40V pp 

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 @ 7 kHz shelving 

Slider 1 + /-15dB @ 110Hz 

Slider 2 + /-15dB @ 340Hz 

Slider 3 + /-15dB @ 1.3kHz 

Slider 4 + /-15dB @ 2.6kHz 

Shape (Push Flat) +8 dB @ 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) 310 x 470 x 240 

Weight (kg) 16 / (lbs) 35