The Kelemen KR-25S is an all tube amplifier designed for the guitarist who wants great switchable clean and saturated tones from a single amplifier. The discriminating guitarist can command a huge array of musical textures with this hand built instrument. The power section is cathode biased and develops great tone with a variety of different power tubes. High quality matched power tubes such as; 6V6’s, 6L6’s, EL34’s, KT66’s…etc can be plugged in without re-biasing.
The amplifier has two completely separate channels that are foot switchable. The switching relay is placed outside of the signal path & does not affect the tone.
Both channels are highly reactive with the feedback control.
Channel 1 – Voiced towards the cleaner side, but will generate some rich compressed overdriven sounds. If I made a three knob single channel amp this would probably be it. This channel works incredibly with pedals too!
Channel 2 – This channel delivers tones from semi-clean to burning thick creamy distortion. It shares an overall similar preamp to the Kelemen KR-35 but achieves saturated tones quicker, especially when used in conjunction with the feedback control.
KR-25S
Front:
Channel 1:
Volume – Controls the preamp volume/gain structure from clean to harmonically mild over-driven saturation.
Treble – Controls treble & the bite of the tone.
Bass – Controls the low end/bass of the tonal spectrum.
Channel 2:
Volume – Controls the preamp volume/gain structure from semi-clean to harmonically rich saturation.
Treble – Controls treble & the bite of the tone.
Middle – controls the mid range of the tone and adds a nice crunch when the preamp is overdriven.
Bass – Controls the low end/bass of the tonal spectrum. The Kelemen KR-25S bass control is voiced to produce thick tones when this control is pushed.
Master – Controls the overall volume of the preamplifier before entering the power tube stage.
Rear:
120VAC power input
Fuse – 2 amp Slo Blo
Foot Switch cable input – when the foot-switch is used the rear panel channel switch is bypassed.
Channel select – switches between channels 1 & 2 when a foot-switch is not used.
Speaker output
Impedance switch – select 2, 4, 8, & 16 ohms
Feedback control – sets the overall gain structure of the power tube section
Tubes:
Preamp - (4) 12AX7 – premium selected from Ruby Tubes, Tube Amp Doctor, GrooveTubes, JJ, Sovtek, and Electro Harmonix, depending on availability & sonic qualities.
Power – stock tubes are JJ EL34 or JJ 6L6.
Dimensions & Weight:
Dimensions - 17.5" width, 9.0" height, 9.5" deep
Weight - 20 lbs
List Price: $2,299
Hand Built point-to-point all tube guitar amplification
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