The 10/10 Class A Amplifier
The Rarest of the Bedini Amplifiers.
The model 10/10 class A amplifier only 35 in number. This Amplifier was given to dealers who sold Bedini products as a leader piece of equipment. If the dealer bought a mix of products then one Model 10/10 amplifier was given to them. Nothing could come close to the sonic ability of this amp except for the Vintage KT 88 tube amplifier ( pictured on the first page). I designed this Amplifier and have seen these amps selling on eBAY for as high as $800.00 or more, the original cost to the public was $375.00. The Amplifier was used by most people for STAX Headphones and in Tri-Amp systems where three Bedini amplifiers would be used, because all the input voltage levels were the same. Simple passive crossovers were the only thing needed.
The 25/25 Class A Amplifier
This Amplifier is going to be reproduced by Bedini in a Vintage Series Mono Blocks in
December 1- 2000 " Special Order only"
Bedini Electronics Inc 1-208-777-4299
What did they say about the 25/25
The Audio Critic
Volume 2, Number 3 Spring through Fall 1980
Since our original review in the last issue, the marvelous little model 25/25 had undergone a $195 price increase and some major changes in its internal physical layout, eliminating virtually all wiring other then the circuit boards themselves. The sound is, if anything, even better; the silkiness of the highs and the transparency of the midrange are unsurpassed in our experience, except possibly by some-- not all-- versions of the Futterman tube amplifier and one or two experimental solid state prototypes. The bottom end of the Bedini is very impressive for a 25/25- watt stereo amplifier with a single power supply, but of course there are many large amplifiers with all-out dual power supplies that will give you firmer and subjectively deeper bass, (John Bedini has been experimenting with a heavily beefed-up power supplies for a variant version of the 25/25; we have looked at a slightly miscalculated sample and found it quit promising, but for the moment this is not a commercially available product and would have to sell at a much higher price if it were marketed.)
We want to state again that the Bedini 25/25 appears to be just about the ideal amplifier for driving the Quad electrostatic loudspeaker; the combination provides the utmost clarity, very satisfactory SPL capability and complete safety, since the largest voltage swing the 25/25 can deliver into a load of any impedance is considerably short of whatever could damage the Quad, even on a long-term basis. And that $845 price tag seems a little more tolerable in a low-powered amplifier when you can tell yourself that you're buying a Quad accessory.
We also wish to withdraw our recommendation of the Cotter NFB-2 noise filter/buffer for use at the input of the 25/25. that was our initial lab bench determination; several months of listening experience have convinced us that real-world input signals, even the fasts, are unable to get the Bedini into any kind of audible trouble.
The One Meg Class A 25/25
The amplifier that blew the others away!!!
This amplifier is the most sought after by audiophiles to this day, their is nothing in the market to compare it to in the 25 watt range. The amplifier used one of the best transistors that Motorola ever made the 2N5885, 4Mhz device at 25 amps. This amplifier is also a positive feedback feed forward circuit using a dual diff-amp front end like all Bedini amplifiers coupled to the NPN quasi- complimentary output stage. The amplifier also used modified diff amplifiers using tunnel diodes to balance the currents. This amplifier would run loads down to 1ohm with no problem, most of these amplifiers were used to run ribbon loudspeakers to high levels.
The internal view shows that it used dual transformers in push pull wired to a power supply board with 23,000 Uf capacitors. There were 11 devices per channel, it also used a split power supply at 60 volts.
The Model 801 Class A Amplifier
The model 801 amplifier was manufactured between June 1987 to August of 2000. The amplifier was 120 watts at 8 Ohms with less then .1 THD 20 to 20 Khz, The 801 amplifier used the 25/25 drive boards with a bigger power supply. This amplifier will also be produced in the Vintage series Mono Blocks. The more we study the construction of these amplifiers the better the chances to build any power level into the Vintage series Mono Blocks, keeping the best sound quality of all the amplifiers.
The Model 100\100 Dual Mono One Meg
The model 100\100 dual mono one meg
This amplifier is in the same class as the model 25\25 One Meg using the same chassis as the model 200\200, the amplifier is gray in color only. Their is a matching pre-amp dual mono also gray in color.
