Very nice and clean Audio Research SP16 preamplifier with phono stage. There are 6 ECC83 tubes inside. Very lightly used. It come with remote and original factory box. Selling due to upgrade.
Shipping in factory box via Fedex or USPS. Buyer pays shipping.
Frequency response Line: +0-1dB, 1Hz to 60kHz at rated output. -3dB points below 0.5Hz and above 100KHz
Phono: ±0.3dB of RIAA, 10 Hz to 20KHz
Distortion (THD) Less than .007% at 2V RMS single ended output
Noise & hum Line: 15µV RMS IHF weighted at main output with volume low (96dB below 1V RMS output).
Phono: 0.9µV RMS IHF weighted equivalent input noise, shorted input (67dB below 2mV RMS 1KHz input).
Gain Main output line: 11.5dB Single Ended Processor: 0dB
Phono: 55dB at 1 KHz
Record output, line: 0dB. Phono: 43.5dB
Input impedance 50K ohms line, 47K ohms Phono, (1 to 6Mv High output cartridge recommended) Inputs (6): phono, DC, tuner, video, aux, processor, (Single Ended RCA connectors). Model SP16L has no phono input.
Output impedance 260 ohms Single Ended main; 20K ohms minimum load and 1000 pF maximum capacitance. Outputs (3): 2 main, 1 record (Single Ended RCA connectors).
Output polarity Non inverting (Any input or output).
Maximum inputs Line: 3.5V RMS Single Ended.
Phono: 25 mV RMS 1KHz, 50mV RMS 10KHz
Rated outputs 2V RMS Single Ended into 100K load. Maximum output 15V RMS at 1% THD at 1kHz.
Power supplies Electronically regulated low and high voltage supplies. Automatic 30-sec. warm-up/brown-out mute. Line regulation better than .01%.
Tube complement (6) 12AX7EH dual triodes
Power requirements 100-135VAC 60Hz (200-270VAC 50/60Hz) 36 watts.
Other Push buttons: Volume up, volume down (70 steps, 20 LED indicators), Input, Processor, Mute, Power. All functions on IR remote control.
Remote 12V out: Line: 12V DC at 100 mA max for system power control, i.e. to turn on power amplifiers and other equipment and full remote control on all functions.
Dimensions 17.75" (45 cm) W x 5.2" (13.2 cm) H x 10.0"(25.4 cm) D. Rear connectors extend 0.6" (1.5 cm).
Weight 12.6 lbs. (5.7 kg) Net; 20 lbs. (9.1 kg) Shipping.
The SP16 is completely single-ended with five sets of inputs (labeled Phono, CD, Tuner, Video and Aux) plus a Processor pass-through. There are two sets of main outputs for flexibility, plus a Tape out. The SP16 has a 12-volt trigger to turn on power amplifiers or other equipment, and full remote control of all functions including power, input selection, stereo/mono, volume, and muting. The power cord is our standard removable IEC.
The most important control functions of the SP16, including Power, Mute, Processor, Input select, and Volume Up/Down, are accessible on the right side of the front panel via six soft-touch buttons, just like the control buttons on the CD3. On the left side of the front panel (mirroring the control function cutout on the right) is an LED display indicating Input, Processor, Mono, and Mute, with a horizontal row of LEDs underneath numbered 1-20 (lit one at a time) for volume. In its other physical aspects we have made several changes from the norm while still maintaining the strong Audio Research look. The front panel is 17.75 inches wide and is virtually flush with the chassis sides.
Look inside, and you will see the same beautiful construction quality found in its more costly siblings: the same expensive board material, the same extra-thick copper circuit traces, even the same point-to-point wiring and hand-soldering of parts. Machined RCA connectors, not cheap imitators. The SP16 is pure Audio Research, pure Class-A, with all-tube gain in both line and phono stages utilizing three select 12AX7 tubes in each circuit (six total). We are enamoured of these particular 12AX7s -- which are new production and have only become available in the last few months - not only because of their sonics, but also because they allow the circuit topology to remain simple while providing high-gain. Circuit highlights include regulated power supplies with a total of eight high and low-voltage regulators, high-energy storage plate supply, our patented DEC filter cap decoupling, high performance input-selection relays allowing short audio paths, and 70-step digitally-controlled analog-switch volume control with precision tracking. Dual low-impedance cathode-follower main outputs allow you to easily drive two power amplifiers simultaneously. Gain for the line inputs is 12dB. Total gain from the phono input to the main outputs is 54dB, suitable for moving-magnet and high-output moving coil cartridges.
Sonically, the SP16 is pure fun as it easily unravels fine musical lines, bouncing along with surprising micro and macro-dynamic swings. The soundstage is big, airy and dimensional. Vocals have real body, making Ella, Frank or Diana sound like they're singing just for you. The SP16 is so good that it can be partnered with a vintage D100 or a new VT200MKII and sound glorious either way. And, it will make the sound come alive when it's used with an A/V processor.
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