LS16MKII Stereo Preamplifier

LS16MKII Stereo Preamplifier

Since its introduction in 1999, the LS16 has been a best-seller, combining a relaxed, engaging musicality with good flexibility and connection options. So why change a good thing? Well, the enhancements introduced in the Mark II versions of both the Reference 2 and LS25 have proven so popular that we feel it is time to incorporate many of the same technological improvements into the LS16MKII.

Functionally the LS16MKII remains unchanged except for the labeling of the inputs. (Single-ended inputs are now labeled CD, Tuner and Aux; Balanced inputs are labeled Bal 1 and Bal 2). The only other external change is the rear-panel addition of a 12V on/off trigger for remote powering of other linked audio and video components.

Internally the LS16MKII closely follows the evolutionary path established by the LS25MKII - and to a great extent the Reference 2 MKII - by incorporating a JFET input stage followed by a cathode-follower/output driver stage utilizing two 6H30 twin-triodes. Now all three preamps use the same wonderful output driver tube, rated to have an estimated service life of up to 10,000 hours.

Sonically the MKII is a compelling musical step forward, with greater resolution and purity. Everything sounds "faster" with less smearing. There is greater transparency, with better dynamic shading. Images are more precisely focused within an even larger and more holographic soundstage. And bass definition, control and impact are improved significantly. You will love the immediacy and refined musicality from the newest little brother of the Reference 2 MKII.

The MKII update is available to original units as a factory upgrade. New 6H30 tubes with our proprietary clear damping rings are included. If you would like to update your original LS16 please contact Audio Research Customer Service.

Control Functions: Volume, Input Select Power On/Off, Operate/Mute, Monitor/Input, Processor/Input

Inputs: BAl Aux, CD; SE Tuner, Phono, Aux, Processor, Monitor

Outputs: BAl Main 2, 3: SE Main 1, Record

LS16MKII Specifications:

FREQUENCY RESPONSE: +/-.1DB, 1Hz to 60kHz at rated output. -3dB points below 0.5Hz and above 100kHz.

DISTORTION: .01% at 1V RMS Balanced output.

GAIN: Main Output - 12.2dB unbalanced. Tape output - 0dB.

INPUT IMPEDANCE: 150K ohms Balanced. 75K ohms SE . Inputs (7): AUX SE, PHONO, TUNER, CD BAL, AUX BAL, MONITOR (SE), and PROCESSOR (SE).

OUTPUT IMPEDANCE: 600 ohms Balanced, 300 ohms SE Main (2), 40K ohms minimum load and 1000pF maximum capacitance. Outputs (4): 2 Main Bal, 1 Main SE, 1 Record SE.

MAXIMUM INPUT: 14V RMS maximum Balanced (7V RMS SE).

RATED OUTPUTS: 2V RMS (1V RMS SE) into 200K ohm Balanced load (maximum Balanced output capability is 30V RMS at 1% THD at 1kHz).

CONTROLS: Volume, Input Select. Toggle switches: Power On/Off, Operate/Mute, Monitor/Input, Processor/Input. All functions on Remote Control.

POWER SUPPLIES: Electronically regulated low and high voltage supplies. Automatic 45-sec. warmup mute. Automatic brown-out mute.

NOISE: 25uV RMS residual IHF weighted Balanced noise output with gain control with gain control at minimum (98dB below 2V RMS output).


TUBE COMPLEMENT:2-6H30 dual triode. (Vacuum tube audio circuit, solid-state power supply.).

POWER REQUIREMENTS:100-135VAC 60Hz (200-270VAC 50/60Hz) 45 watts maximum.

DIMENSIONS: 19" (48 cm) W x 5.25" (13.3 cm) H (standard rack panel) x 10.5" (26.7 cm) D. Handles extend 1.50" (3.8 cm)forward of front panel.

WEIGHT: 11.9 lbs. (5.4 kg) Net; 21 lbs. (9.5 kg) Shipping.

Specifications subject to change without notice.

Audio Research Corporation
3900 Annapolis Lane North
Plymouth, Minnesota USA 55447-5447
Phone: 763-577-9700 Fax: 763-577-0323
©2003 Audio Research