Graham Slee Proprius Monoblocks

[CageyH]

I am really in two minds about selling these fantastic little amps, but I could do with freeing up some cash, and I really don't need 5 sets of amplification. I am in no real hurry though, so low offers will be dismissed politely.

Generally well reviewed 25W class ab monoblocks in near mint condition. Details/specifications on the Graham Slee website. I bought them new, and have owned them for just over a year and have used them to drive my Cyrus CLS70 and FH3s (where they were mounted on the speaker).

https://flic.kr/p/oBTjvB

https://flic.kr/p/vKeJaY

I am looking for £900 + postage.

Details here - http://www.gspaudio.co.uk/power-amp.htm

[CageyH]

Pictures not working, so I will try again.

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[CageyH]

New pictures added above. If you look closely, you can see a small black mark on the side of one of the amps, (near the speaker terminals, above and behind the screws).
They will come with the 48V power supplies, and the brackets you see to mount them onto a speaker, should you wish.

Data taken from the Graham Slee website:
Features:
25 Watts into 8 Ohms / 45 Watts into 4 Ohms
High biased discrete transistor power amp – not class D or T
Rugged 25 Amp 30MHz output transistors
No DC offset on output – safe to leave speakers connected
Balanced or single-ended line level input
High-end professional gold plated XLRs on input and power
Can be used free standing — or remotely on loudspeakers (brackets supplied)
Individual volume control can be "parked" at full when controlled from a preamp
Effective heat radiator case for comfortable high-bias running
Individual 120 Watt remote switchmode power supply with each Proprius


Specs:
Power output (rms) measured 26 Watts into 8 Ohms; 45.5 Watts into 4 Ohms (ref 1% THD+N at 1kHz)
Power bandwidth at rated power into 8 Ohms 10Hz - 47kHz (-3dB), 20Hz - 25kHz (-1dB)
Power bandwidth at rated power into 4 Ohms 12Hz - 40kHz (-3dB)
Total harmonic distortion and noise at 8 Ohms 100Hz: 0.043%; 1kHz: 0.047%; 5kHz: 0.061%; 10kHz: 0.085%; 20kHz: 0.125%
Total harmonic distortion and noise at 4 Ohms 100Hz: 0.066%; 1kHz: 0.071%; 5kHz: 0.094%; 10kHz: 0.129%; 20kHz: 0.181%
Signal to noise ratio in dB "A-weighted": 87dB; 22Hz-22kHz "Q-pk": 80dB
Bias type Class Ab; Bias current: 60mA (approx.)
Input sensitivity for rated output 575mV rms
Short circuit protection Fuse and power supply shut-down (short circuits should be avoided to prevent component stresses)
Fuse F2A 5mm x 20mm (glass "quick-blow" fuse rated at 2A)
Power supply 48V DC, 120 Watt - self adjusting to AC mains 100V - 240V, 47 - 63 Hz; IEC cord supplied
Size (approx.) Amp W105 x H55 x D205 mm; Power supply W65 H40 D170 mm

Hifi Pig review - http://hifipig.com/graham-slee-proprius-mono-power-amps/

TNT Audio (with majestic DAC) - http://www.tnt-audio.com/ampli/gsp_majestic_proprius_e.html

A couple of other reviews can be found here - http://www.gspaudio.co.uk/power-amp.htm

[CageyH]

Interest shown from Sweden, but here is the best type of bump I am allowed to post on a forum.

http://www.ephemeraldigest.co.uk/wp-content/uploads/2011/01/mr-bump.jpg

[CageyH]

Now sold.