Graham Slee Proprius monoblocks

[ianlenco]

For sale my Graham Slee Proprius Class A/B monoblocks. New they cost £649 each, offered here for £700 the pair. Rated at 25w per channel but they've driven my Neat Motive speakers (86dB) and 15 ohm LS3/5a's with no trouble in reaching high, undistorted levels.

http://i.imgur.com/plQcXxjh.jpg#gWPQG

http://i.imgur.com/ZBeG6yOh.jpg#gWPQG

http://i.imgur.com/gDHjHPvh.jpg#gWPQG

Specs:

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
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
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

In immaculate condition, original boxes and instructions but no mounting brackets to screw :shocked: on to the back of your speakers.

I can include a pair of phono to XLR convertor plugs if you don't have balanced out from your pre or I also have some balanced cables if you want them. Graham Slee sells phono to XLR cables for these amps if you want to get rid of the connectors. Small enough to tuck behind your speakers and have volume controls so can be used without a pre if you only have one source or turn volume full on for use with a pre.

Reviews here.

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

http://www.tnt-audio.com/ampli/gsp_majestic_proprius_e.html

You are welcome to come and audition and hopefully collect orinsured p&p to UK mainland will be £20. Payment by paypal gift or cash on collection

[morris_minor]

I've a pair of these used with PMC GB1i speakers - plenty of "Yorkshire watts" for clarity and punch. I've no plans to sell mine . . . :eyebrows:

[ianlenco]

Thanks for the recommendation Bob. Unfortunately there doesn't seem to be much interest even at half new price. It looks like it will be ebay on Sunday unless someone makes a sensible offer.

[morris_minor]

That'd be a shame Ian, 'cos that's a great price. How about putting it on Graham Slee's own forum if there are no takers here?

[ianlenco]

Funnily enough I've just done that :)

[ianlenco]

Now sold.