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Details about  Rare BEVERIDGE RM1 RM2 State of the Art TUBE PREAMP

The Finest example of this classic component extant !


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Item information

Item condition:
17 May, 2011 20:01:32 BST
Winning bid:
US $3,200.00
Approximately £2,056.29(including postage)
17 bids ]
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Item location:
Brooklyn NY settled in 1634,unsettled by 1934, United States
Posts to:
International postage and import charges paid to Pitney Bowes Inc. Learn More- opens in a new window or tab
No returns accepted
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Seller assumes all responsibility for this listing.
Last updated on  17 May, 2011 01:50:29 BST  View all revisions

Item specifics

Condition: Used  
Offered here is a rare Beveridge RM1/RM2 tube preamp that I have owned almost since it was new..As an avid Beveridge fan I 've had a few of these since they were introduced..I originally used  RM1/2 preamp with an incredible pair of the original Beveridge model 2 full range electrostatic speakers..Subsequently I bought  the Model 2SW speakers and finally the 2SW2 system,always using one example or another of the RM1/2 preamp. The original Model 2 speakers were in my opinion the ones I liked the best.
At one point I decided to address a couple of  intrinsic problems that probably plagued  every Beveridge preamp  made to one degree or another..ie: premature or prolonged muting,caused by deterioration of 3 of the 12  6DJ8 tubes which also  compromised its great performance , and there was some softness of the lowest octave in most speaker systems..With the help of  Roger Majesky  designer of the RM1/2, there was a big improvement, however after a while signs of the same problem began to occur again so I decided to start a cost no object improvement effort, locally in Brooklyn and had one of the most highly regarded and competent high end audio technicians  in the country tackle this preamp.  He studied the circuitry carefully looking for the cause of the  premature tube aging and when he finished $1500+ later (1988 dollars) I had exactly what the RM1/2 should have been from the factory...a component that  now sounded even better than new...didnt use up the 3 tubes in the circuit as before.. deteriorating the performance as well as causing DC offsets engaging the muting circuit.The culprit had been a design fault in the power supply. This was eliminated permanently !
The result was a reliable and incredibly accurate luxury component that never exhibited any problems since!
The preamp was recapped with the highest quality caps at the time ,including an entire bank of large caps  mounted on a new board ( that can be seen in open cover image at the top right) that never existed previously which tightened up the bass perfectly..New premium wire was also installed as well..
The Cinch Jones connector between the preamp and the power supply was eliminated by hard wiring..also eliminating problems.. Some other details I can no longer remember were corrected..
The RESULT: The most highly refined example of this benchmark preamp ever done.  Beveridge RM2 RM2 preamps appear on the market now and then but none have had this level of refinement or the vital corrections mentioned earlier. You will never find another like this one!
I had moved a few years ago and since then I didn't set up another high end system ,nor used this preamp again except to test it today.Actually it hadn't gotten much use prior to moving for that matter. Now I feel I wont have an occasion to make use of it and it's a shame for it to sit in the closet .

Some of the Beveridge's features and functions:
-The RM1/2 had the BEST signal to noise ratio of  ANY  audio component made up to that time (and possibly to this day!) of   80db.quieting
Original price  $3500 (the most expensive audio component of its day. Many hundreds more than  the ARC SP9 which was its closest competition and the RM1/2 clearly superior by most opinions (except for one prominent publisher who couldn't or wouldn't admit that Beveridge was better than the ARC SP9...$$$$).  Yet Harold Beveridge actually lost money on every RM1/RM2!
-Rare and useful.. true phase reversal..Mode.. (nor just speaker phasing)
-Built in warm up turn on delay (red display).
-Green display for operation mode.
--Blue display for auto mute (if  no signal for several minutes) .
-Touch mute feature.
-Stereo Blend control sets varying amount of stereo separation from mono to full stereo.
-Fully adjustable(micro switches) phono section..2 tone arm inputs .
-Hard wired connecting cable.
-12 tube 6DJ8 circuitry.
-Tape input switching (Source).
-Aux /tuner/Phono1/ Phono2
-Top quality pots, control switches,tube sockets. True stepped volume pot..multiple switchable AC receptacles. All knobs were actually hand machined (at great expense)!
-Comes with owners manual,remarkable original 16 pages of schematics!
-Original cartons.
This is a rare opportunity to buy a great high end preamp that is working beautifully and "sounds" as good  (or better) than  most highly rated contemporary  preamps  AND it offers several unique features (including a superb and flexible phono section) that other "state of the arts"preamps do not provide!      It's a piece of audio history..A challenge that was more than successfully accomplished  and something I never thought I would part with!..Plans were made to reintroduce the Beveridge RM!/2 a few years ago at somewhere between $10k and $14k, but it never materialized. -If this preamp was marketed today  its doubtful if it would be less than $20k...possibly more!
The cosmetics are excellent with only minor signs of usage. There is a noticeable hairline below the power switch on the RM2 power supply.(RM2 p/s should be kept at its umbilical cable's length from the preamp RM1...a lower shelf is appropriate.Never stacked as shown)
Please ask any questions (EXCEPT the reserve!) before you bid..Because it is a vintage component there is no warranty or guaranty regarding the performance of this item. Sold as is.
Payment due within 3 days. Shipping in US $50... Foreign shipping estimates- inquire on line:    usps.com or ups.com for the exact charges to YOUR country.
Packing will be carefully done to withstand the usual poor handling by shippers!Insurance will be required for ebay sale price.
Reserve the right to end auction if sold locally..No sale to Communist China or to the Russian Fed.

On May-09-11 at 12:19:17 PDT, seller added the following information:

A European bidder with 0 feedback have just run the bidding up to my reserve.
This was apparently done either just out of curiousity by the bidder or with some intent to disrupt the auction for his benefit.
I have cancelled his bids and blocked additional bidding from him.  Ebay tells me that he will be dealt with  for this activity.
Such bids will be remover immediately so those bidders MUST make prior contact with me before making their bid.
thank you

On May-09-11 at 12:31:09 PDT, seller added the following information:

I am requesting the cooperation of bidders from Korea,Hong Kong, Singapore, and Italy to provide me with their email addresses before bidding,because of previous problems with payment and with making successful contact about the transaction! 
I will ship ONLY to the buyers actual address listed with ebay

On May-16-11 at 13:54:19 PDT, seller added the following information:

-Several people have inquired about using the Beveridge RM1/RM2 outside of the US and at 220vac.
-It is my opinion that the transformers in the power supply can be configured to 220v for use in Europe,etc
-The factory sales brochure indicates in its description of its Power Requirements the following statement.....  "95-135vac, 185-240vac.50/60 cycles."
-The schematic for the RM2 power supply shows a notation  for "220v" which I ASSUME....confirms the information mentioned above.
This is all that I can tell you about using it other than at its (95-135v) current arrangement!
Thank you for your interest.

On May-16-11 at 15:01:27 PDT, seller added the following information:

 MORE about the BEVERIDGE RM1/RM2:
" The vacuum tube,considered to be noisey and limited bandwidth,was found to have advantages over solid state rivals. The problems attributed to vacuum tubes are not intrinsic,but rather result from improper circuit design.  Applying new circuit topology to the RM1 has allowed a tube preamplifier tohave a signal to noise ratio of 80db and bandwidth of .15hz to 600khz. In addition the vacuum tube has the most linear gain of any device under the dynamic conditions of musical reproduction. In the RM1, this equals uncanny definition and tree dimentionality.
The power supply has a greater effect on audio reproduction than commonly believed.The RM2 power supply regulates the preamp im 6 stages with a total of 480,000 mfd or about 1/2 farad to the effective capacity. The RM2 is also solid state. While not in the audio signal path, these solid state devices properly bias and regulate tubes. This is the first tube preamp whose sound will not change with age,nor is it prone to tube rekiability problems of the past.
Phono EQ accuracy above reproach. Passive RIAA eq within +/- .05db without "hump and saddle" errors.
Worlds QUIETEST tube preamp (80 db S?N),high phono overload(up to 1000mv), and ultimate power supply reserve (RM2's equivalent of 480,000mfd's)all combine to offer 120db of musical dynamic range.
The RM1 will pass bass step tests with less overshoot and ringing than any preamp  we know. This means exceptionally accurate, dynamic,and tight base.
Time domain corrected "gradual slope" subsonic/supersonic filters.
Absolute phase of either/ both channels in stereo or mono.
Segmented gain/balance controls,2db steps(guaranteed 1db tracking).
Buffered tape and main outputs prevent adverse effects of cable capacitance and input non linear loading.
2000 watts of auxilliary power available  in the RM2 power supply
Vacation switch on RM2 allows the power supply to either "idle" or shut off completely..
Complete RF proofing and freedom from hum loops, achieved by special isolated panel construction.

Freq. response high level +/-.05db,1hz-100khz,(-3db,.015hz,600hkz). Magnetic Phono: .05db,1hz-100khz,(-3db,.15hz,600khz).
THD/IM Distortion <.02% at 10 volts RMS output.
Gain 40db phono at 1khz;+/-6db,20db line+/-; adj. +/- 6db.
Input impedance 47k standard.user. adjustable. Provision to add inputaance.
Phono Impedance levels:
Gain=46db,250mv m.coil; Gain=40db,500mv m/m low; Gain=31db,1000mv m/m high.
Rated out 10volts rms...15hz-500khz. all outputs direct coupled.
S/N Ratio ;5uv input noise,wideband rms(-85db reference,10mv input).
Slew rate 100v/us.
Dynamic range Over 120db.
Bass Step 3/8 second; <25% tilt; overshoot <5%.
RM2 Power Supply Cap 80,000mfds.capacitance each into six separately regulated h.v. supplies.
HV Supply Output Impedance .1omega from DC to 20khz.
Line voltage Regulation <.1% (95 to 135 V).
POWER REQUIREMENTS...95-135/190-270VAC. 50/60 hz,130 watts.
Weight: 49(+) pounds shipping wgt".

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Item location: Brooklyn NY settled in 1634,unsettled by 1934, United States
Postage to: Worldwide
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