Audio Research LS2 MKII Stereo Tube Hybrid Preamplifier. Serviced!

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Audio Research LS2 MKII Stereo Tube Hybrid Preamplifier. Serviced!

This item has been serviced by our technicians before listing for sale with changed parts, tune-up & clean. Refurbished with cap-kit, oxidized/ overhauled all the buttons and contacts... Brought back to working condition.

This unit is in very good condition! None visible impact, crack or any bend, have been professionally polished and cleaned; few marks are left on the case but it will sure be touched up before shipping.

Fully functional, magnificent output quality.....

Specifications
Frequency Response:

± .5dB, 1Hz to 100Hz, -3dB points below 0.1Hz and above 300kHz

Distortion:

Less than .01% at 2V RMS output (typically less than .005% in midband)

Noise & Hum:

20µV RMS residual 1HF weighted noise at main unbalanced output with gain at minimum (100dB below 2V RMS output). xxx Balanced input noise 100dB below 1V input.

Gain:

LS2: Main Output: 18dB. Balanced output: 24dB. Tape output: 0dB (Optional 12dB gain reduction). LS2 MKII: Main Output: 18dB. Balanced output: 24dB. Tape output: 0dB (Optional 9dB gain reduction)

Input Impedance:

LS2: 50K ohms. LS2: 50K ohms unbalanced, 3 megaohm balanced.

Output Impedance:

LS2: 200 ohms main output. 500 ohms Balanced 1, Balanced 2 (10K ohms minimum load and 2000pF maximum capacitance). LS2 MKII: 200 ohms main output. 400 ohms Balanced 1, Balanced 2 (10K ohms minimum load and 2000pF maximum capacitance)

Maximum Inputs:

LS2: 20V maximum. LS2 MKII: 20V maximum unbalanced, 8.5V maximum balanced.

Rated Output:

LS2: 2V RMS 1Hz to 100kHz into 60K ohm load (maximum output capability is 10V RMS (20V RMS balanced) output at 05% THD at 1kHz into a 10K ohm load). LS2 MKII: 2V RMS 1Hz to 100kHz into 60K ohm load (maximum output capability is 30V RMS (60V RMS balanced) output at 05% THD 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 .01%

Tube Complement:

LS2: (1) 6DJ8/ECC88. LS2 MKII: (1) 6922.

Power Requirements:

100-135VAC 60Hz (200-270VAC 50/60Hz) 60 watts maximum

Other:

Hybrid FET/Tube audio circuit, solid-state power supply

Dimensions:

19" (48 cm) W x 5 ¼" (13.4cm) H (standard rack panel) x 10 ¼" (26cm) D. Handles extend 1 ⅝" (4.1cm) forward of front panel. Rear chassis fittings extend ⅞" (2.3cm).

Weight:

LS2: 13 lbs. (5.9 kg) Net; 21lbs.(9.5 kg) Shipping. LS2B MKII: 14 lbs. (6.0 kg) Net; 22lbs.(10 kg) Shipping.

• Please examine all the pics and ask any questions prior purchasing 

Warranty Information

• 30 days warranty standard applies to all on-sale products! Contact us for the extended package!
• Please do not attempt to open/disassemble the goods regards to any reason to ensure the process and your safety without our instruction, or the warranty/support will be voided.
• Please contact us ASAP within 30 days as any warranty/support policy time-frame will be applied once the item is marked as DELIVERED on the used carrier's site, otherwise we won't accept any reason to extend the warranty or solve any matter related to the unit.

Shipping Information

• We use the best shipment services worldwide. 100% Trackable
• Customer Pick-Up can be arranged for local sales if it can be done in a timely manner.
• Please contact us before purchasing any oversized items (that could exceed 29 kg) such as Speakers, Home System System Speakers, Console...
• The shipping fee that eBay provides might NOT be correct. Making the payment without our notice for these items might delay the shipment.
• Please be understand that we're always trying our best in Packaging, however, delivery Time Frames sometimes could be affected by a variety of reasons - We don't accept refund/return due to shipping delays - Please patiently wait for its arrival before any further assistance.
• Please refuse to the packaging with signs of visible heavy damage on the outside such as bend, water damage...

Hours of operation are Monday to Friday 10:00AM to 6:00PM EST. 

Or On Saturday 10:00AM to 2:00PM

Customer service

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