KR Audio P135 Pre Amplifier

KR Audio

$6,490.00 USD 

P135 - Stereo Pre Amplifier

Four input pre-amplifier built with KR45 tubes, high gain, direct heated triode, hand built by KR. MC Phono optional.

Output tubes 2x KR45 direct heated triodes 
Line Inputs 3x RCA, 1x XLR (pairs) / MC Phono optional
Line Input Sensitivity 0.75V / 47 kOhm
Output Level 1.5V
Frequency Response 10Hz - 100kHz (-1dB)
Power req. / consumption 115-230V / 36VA
Dimensions - w x h x d 36.5 x 8.5 x 26 cm 

Approx. 6.5 k

Andreas Wenderoth of Image HiFi (Nov. 2018 )concluded:
"...with the P-135 KR Audio has succeeded in a surprise coup. Despite its modest dimensions, it plays 'big' and impressively sovereign. It can do everything more than good, and it does the bass even better..."
CLICK HERE to read the entire review (in German)

Brad Morrical of Positive Feedback concluded (August 2017):
", what now to make of this smallest of high-end preamplifiers?  It is highly resolved in the best sense of the word where one can see into the recordings of sufficient quality. It has a soft touch that seems to be often in character with DHT output stages but loses none of the dynamics one would expect from a top preamplifier. All of this was more or less what I expected given the KR Audio heritage and it is just these characteristics that give their big amps such a strong reputation for performance. What surprised me the most was the effective punch in the bass that it delivers, which is the equal of the NAT Plasma and Einstein "The Tube" preamplifiers. This is also in character with KR amps but given the diminutive size of this preamplifier I was taken a bit off guard. Finally, music through this preamplifier just made sense and it welded things together in a convincing manner that allowed dissection without disintegration. I think that the KR Audio P-135 should be one anyone's shortlist when looking for a preamplifier between 4-10K Euro as it is really superb sounding and as such offers excellent value..."
CLICK HERE to check out the entire review

Reviews about the predecessor P130 preamp:

 Most Wanted Component 2015 Award

Greg Simmons, The StereoTimes, wrote:
"...KR Audio might be best known for the proprietary tubes the size of one-liter pop bottles that they use to get real world power out of single-ended triode amps, but their lineup is more diverse that that. Their P-130 pre-amplifier might be the sleeper in their lineup. A densely compact chuck of equipment carved from solid aluminum case with two big tubes on top, single-ended (balanced ins and outs optional), with a built in moving coil phono-stage in the number 1 input. Everything about this pre feels high quality. Best of all, it sounds high-quality too, with excellent bass extension, a large, deep soundstage, excellent clarity, and that elusive musical boogie factor. A terrific piece that’s been a joy to listen to with anything I’ve played through it..." CLICK HERE to read the entire review

Gold Show Award Rocky Mountain Audio Fest 2012 (


  Gold Show Award T.H.E. Show Newport Beach 2013 (  

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