Sunday, October 7, 2012
Galactron MK 2280 integrated amplifier
€6500
This amp is a 80 watt class AB design with dual mono construction and FET output devices, but the key spec is the use of interstage transformers.
Power output in 8/4/2 ohms - 80/150/220 watt
Weight - 30kg
Inputs - 1 balanced and 4 unbalanced.
Galactron
Thursday, October 4, 2012
Audio Research Reference 10 Company Letter
That we would only accept new orders for this special product during the anniversary year surprised almost everyone, but we considered the limited time frame appropriate. Sales of the Anniversary more than doubled our projections and we received hundreds of requests to keep it in the lineup, but that would not have been fair to original owners. Strong demand for a new, two-chassis Reference preamplifier has not diminished since production of the Anniversary ceased.
We are very proud to introduce the Reference 10, a new two-chassis line-stage preamplifier that will again redefine performance and the preamplifier landscape. The retail price of the Reference 10 is Euro 31.500,-.
Is it better than the Anniversary? Yes, clearly. We have learned a few things in the last 2-1/2 years, and the improvements are immediately apparent. Included are critically chosen new components, proprietary custom-made capacitors, wiring, and new connectors that cumulatively provide a level of performance never before achieved.
Key design traits remain: The signal path is fully discrete, all-tube, pure Class-A, with zero feedback. Other attributes and choices remain, too: Each unit is completely hand-soldered and hand-constructed in our Minnesota facility using the finest materials, with major components such as custom transformers, plated-through circuit boards, and casework sourced locally. All engineering is performed in-house.
The REF10 draws from the Anniversary’s layout and design, with dramatic updates in aesthetics and operation. The REF10 has a very modern and elegant finish that will attract new admirers without alienating fans of our older products. The front panel of the main control unit has a new, large round volume knob on the right side, with two buttons under it for Power and Mute—the only two buttons on the unit—and a large display on the left. Our logo is above the knob on the right, making this the first asymmetrical Audio Research preamplifier ever.
The left side of the front panel contains a 7″ (diagonal) interactive touch-screen display that allows the user to easily control almost all functions. After the initial turn-on sequence, the Volume, Input, Balanced/SE, Stereo/Mono, Phase 0/180, Balance (left-right) control, Mute/Operate, and Settings icon are clearly displayed. Touch the input displayed (such as Tuner), and all of the inputs are displayed for your selection. Likewise, if you touch the Stereo icon it switches to Mono, touch the Mute and it switches to Operate, and so on. It is quite straightforward and intuitive.
Touching the “Settings” icon (it appears as a “gear”) on the display brings you to a submenu with different options related to the setup and functionality. You can change the input names via an alphanumeric keypad, for example. Input gain offset can be adjusted independently for each input; you can check (or reset) the tube hours meter, adjust the display intensity, or you can change the foreground and background colors of the display—there are ten color options for each. The default display has our traditional green text on a black background, but you can change that to white on blue, or red on dark gray, or so on. It is very easy to customize the look you want.
The power supply chassis, connected to the main unit via two umbilical cords, simply has one green LED under its offset Audio Research logo. All of the side panels are finished identically to the front panels: Natural anodized, one quarter-inch thick, with no screws visible. The entire chassis (including rear panel) is painted silver to complete the look. There are beautiful new, clear acrylic covers with a revised perforation pattern; metal covers will not be available. And, there is no printing on the front panel of either chassis. Units with a black finish will not be available until early December.
After the single 20A power cord, the REF10 is completely dual-mono from the power supply through the audio circuit. There are dual, separate low- and high-voltage transformers for each channel; there is dual-mono vacuum-tube regulation (one 6H30 and one 6550WE per channel), dual-mono audio circuits (four 6H30 per channel), and enough energy storage for a serious power amplifier.
As usual for a Reference preamp, there are seven inputs, including a Processor input with unity-gain, one Record output, and two sets of Main outputs. All inputs and outputs have both Balanced and Single-Ended connections. For the first time in a Reference preamp, there is an RS-232 input in addition to dual 12V-triggers.
It is difficult to describe the sonic attributes of the Reference 10 because the descriptions are oft repeated to the point of cliché. Just as the Anniversary preamplifier was shockingly better than its predecessors, the Reference 10 offers a further level of resolution, refinement and dynamism that vividly improve the musical experience in every way. As we have said before, words can only fall short of your own experience; to understand how much more profound listening to your favorite recordings can be, you must hear the Reference 10. It is stunning.
Production is already underway, with some units available in October.
Sincerely
Dave Gordon
Audio Research Corporation
Tuesday, October 2, 2012
Monday, October 1, 2012
Saturday, September 29, 2012
Tuesday, September 25, 2012
Audio Research Reference 10 Preamplifier - pictures
Specifications
FREQUENCY RESPONSE: +0 -3dB 0.1Hz to 200kHz at rated out-put. (BALANCED, 200k ohms load.)
DISTORTION: Less than .006% at 2V RMS Balanced output.
GAIN: Main output (SE or BAL input): 12dB Balanced output, 6dB Single Ended output. Tape output: 0dB. (Processor
input: 0dB Balanced)
INPUT IMPEDANCE: 120K ohms Balanced, 60K ohms SE, Inputs (7): 1, 2, 3, 4, 5, 6, PROCESSOR. (XLR and RCA connectors).
OUTPUT IMPEDANCE: 600 ohms Balanced, 300 ohms SE main (2), 20K ohms minimum load and 2000pF maximum capacitance. Outputs (3): 2 main, 1 tape (XLR and RCA connectors).
OUTPUT POLARITY: Non inverting.
MAXIMUM INPUT: 20V RMS maximum Balanced, (10V RMS SE).
RATED OUTPUTS: 2V RMS (1V RMS SE) into 200K ohm balanced load (maximum balanced output capability is 30V RMS at less than 0.5% THD at 1kHz).
CROSSTALK: -80dB or better at 1kHz.
CONTROLS: Volume (104 steps). Push Buttons: Power, Mute, Interactive Touch Screen. Rear RS-232 control and IR input.
POWER SUPPLIES: Electronically regulated low and high voltage supplies. Automatic 40 sec. warm-up/brown-out mute. Line regulation better than .01%.
NOISE: 1.7uV RMS residual IHF weighted balanced equivalent input noise with volume at 1 (109dB below 2V RMS output.)
TUBE COMPLEMENT: (8)-6H30P dual triodes, plus (2 each) 6550C and 6H30P in power supply.
POWER REQUIREMENTS: 100-135VAC 60Hz (200-270VAC 50/60Hz) 220 watts. Standby: 2.2 watts.
DIMENSIONS: 19” (48 cm) W x 7” (17.8 cm) H (standard panel) x15.5” (39.4 cm) D. Handles extend 1.5” (3.8 cm) forward of the front panels.
WEIGHT: Audio Chassis: 23.6 lbs. (10.7 kg) Net; 33.3 lbs. (15.1 kg) Shipping. Power Supply Chassis: 37.65 lbs. (17.07 kg) Net.
Audio Research Reference 10 Preamplifier
There is not a lot more to tell right now, except that it is the follow-up of the Anniversary Reference Preamplifier. Next month the first units will reach the market.
Sunday, September 23, 2012
D’Agostino Momentum Pre-Amplifier
Only the Momentum preamplifier can deliver the sound quality necessary to get the maximum possible performance from the Momentum monoblock and stereo amps.
Like the Momentum amplifiers, the preamplifier uses complementary balanced circuit topology for maximum bandwidth and low noise. Its audio circuitry is fully discrete, with no op amps. Zero-feedback design assures the most musical sound quality. Volume adjustment is made through a resistor ladder governed by an optical controller—the cleanest, most transparent possible method of controlling volume.
A 300 VA power supply in a separate chassis isolates the preamp’s sensitive circuitry from electromagnetic interference and noise. Separate supplies power audio and control circuitry, so the control circuits are completely isolated from the audio circuits.
The styling of the Momentum preamp perfectly complements the Momentum amplifiers, with copper accents to match the amplifiers’ unique copper heat sinks. The meter on the front face of the preamp indicates the volume setting, and a ring around the meter controls the volume. The front selector buttons illuminate to show which input is active. A radio-frequency (RF) remote control that works through walls is included.
Just like the Momentum amplifiers, the preamp uses through-hole construction and is hand-built and individually tested in D’Agostino’s Connecticut facility.
SPECIFICATIONS
Inputs: 6 inputs (with theater through put)
Outputs: 2 outputs
Dimensions, preamp :18 x 12.5 x 7 in.
Thursday, September 20, 2012
Tuesday, September 18, 2012
FM Acoustics 332 2-way Stereo Electronic Crossover - pictures
Price CHF 34000
Other models
333 - 3-way mono - CHF 68000 /pr
334 - 4-way mono - CHF 80000 /pr
Two Low-Pass and two High-Pass modules needed in each 332 and 333, three each for 334.
Wednesday, September 12, 2012
Tuesday, September 11, 2012
Friday, September 7, 2012
Saturday, September 1, 2012
TechDas Air Force One Turntable
Price from €64000
Optional HRS base
Everything is air here - air-vacuum, air-bearing and air legs.
And it has a belt tension adjuster.
Buttons on the right side - Stop, Speeds 33 1/3 + 45, Bright and Suction.
TechDas has no sound of its own.
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