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Details about  sugden P51 power amplifier

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sugden P51 power amplifier
Item Ended
Item condition:
28 Jul, 2014 13:09:07 AEST
Winning bid:
AU $255.90
4 bids ]
AU $236.60 AusPost Express Post International Parcel | See details
Item location:
Castle Hill, NSW, Australia

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Last updated on  21 Jul, 2014 22:43:50 AEST  View all revisions

Item specifics

Used: An item that has been used previously. The item may have some signs of cosmetic wear, but is fully ... Read moreabout the condition
In very good condition a Sugden P51 power amp. A vintage with a good reputation especially if your driving Electrostatic speakers, made in England in the 80's.

Can be set as a monoblock.

I can get a second unit if wanted if you are looking to pair as a monoblock setup, they are asking $370ea.

50w, weighs about 10kg.

Post of local pickup OK.

Here is a blog extract:

"In the early 1980s, I had the Sugden P51 power amp and C51 preamp. The preamp was nothing to write home about. The power amp is a very musical unit especially with the Quad ESL57.

P51 does not have the wide bandwidth of the modern amps. With the ESL57s it was more musical than the QuadII valve power amp. I do have one. The only other transistor amp that I would speak highly of and possibly better than the P51 is Stax DA50. Both have Class ‘A’ output stages."

"Sugden C51/P51

The Sugden C51/P51 are one of the few pre power amps that can drive electrostatic speakers to great effect without becoming unstable, esp quads, although not class A they have great sensitivity to musical content, At the same time I had these I also had an older class a version of the power amp. In terms of sound the class A was better but lacked the Punch of the P51. at the time my system was Transcriptors Turntable, Shure V15/111 Sugden c51/p51 B&w DM70s, "

Sugden P51

Yes I finally located the P51 in the storeroom!!!

The P51 is the power amp which accompanies the C51 pre.

Weighing about 10kg, the unit is able to deliver 50W RMS per channel and had the innovative feature of being able to be converted into a mono-block with the flick of a switch (for the 60's).

The P51 is known to be able to drive extremely demanding loads and many often used them with ESL(s).

In addition, the C51-P51 pair was often the reference set for many reviewers in the late 60's and early 70's.

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