As traded, good for it's age, some scratches/scuff marks fully checked and serviced by technician, capacitors that needed replacement have been done.
No original packaging
30 day warranty
The LS2 Line Stage Amplifier breaks new ground: there has simply never been a product which so decisively advances the state-of-the-art in a price range approachable by so many music lovers.
With the flexibility of five inputs plus the "Direct Gain Path", and three sets of main outputs (two with balanced XLR's), the LS2 has enough connective options to suit most any ardent music lover. At the same time, only the most often-used control functions have been included, making the LS2 a "hotrod" in the best sense. Unnecessary controls and expense have been expunged.
Internally there are two transformers, and there is twice the amount of regulation of any previous single-chassis Audio Research preamp. New active feedback circuitry negates the effects of output coupling caps, which also contributes to the lower output impedance of the LS2. That impedance is maintained at lower frequencies, in turn allowing greater bass control. As expected, the LS2 is a pure Class A design which is capable of swinging 45 volts peak-to-peak. With higher current capability, long interconnects or low input impedance amplifiers can be driven with remarkable ease.
Continuing the hybrid design concept which Audio Research has been renowned for, the LS2 also continues the tradition of solidly built, handcrafted products constructed to provide a lifetime of musical pleasure. We hope you enjoy it for many years.
Please click here for the instruction manual.
Frequency Response: ±. 5dB, !Hz to lOOkHz, -3dB points below O. lHz and above 300kHz
Distortion: Less than . 0 1% at 2V RMS output.
Main output: 18dB,
Balanced output: 24dB
Tape output: OdB (Optional 12dB gain reduction)
Input Impedance: 50K ohms (Typically less than . 005% in midband)
Output Impedance: 250 ohms main output; 500 ohms Balanced 1, Balanced 2 (lO K ohms m1n1mum load and 2000pF maximum capacitance)
Maximum Input: 20V maximum.
Rated Outputs: 2V RMS 1Hz to 100kHz into 60K ohm load (maximum output capability is 10V RMS [20V RMS balanced] output at . 05% THO at 1kHz into a 10K ohm load).
Power Supplies: Electronically-regulated low and high voltage supplies. Two transformers (toroid for high voltage). Line regulation better than . 0 1%.
Noise: 20uV RMS residual IHF weighted noise at main output with gain control minimum (lOOdB below 2V RMS output)
Tube Complement: 1 - 6DJ8/ECC88 dual triode (Hybrid FET/Tube audio circuit, solid-state power supply)
Power Requirements: 100- 135VAC 60Hz (200-2 70VAC 50/60Hz) 60 watts maximum