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Known for their wide and airy soundstage, the Stax Lambda Pro, paired with the ultra-clean SRM-1 will redefine your reference tracks. Turn any space into your private listening room.

PRODUCTION 1982-95 CONDITION 9/10 SERIAL NO. 8306 / 22656 ORIG. MSRP $799 RESTORATION
  • Full 30-point service check
  • Cleaned controls, switches, and chassis
SPECS

SR Lambda Pro

Type  Electrostatic headphones

Design  Open-back

Transducer principle  electrostatic, push-pull

Frequency response  8Hz–35kHz (no tolerance specified)

Sensitivity  108dB @ 1mW input

THD  0.001% at 95dB

Bias voltage  580VDC

Weight (headset)  15.1oz

SRM-1 MkII Pro

Type  Headphone Amplifier

Inputs  1 x loop-through line-level input, rated 100 mV, 50 k Ohm

Gain  60 dB (1,000x)

Frequency Response  Rated DC - 20 kHz, ±1 dB, at 30 V with one pair of SR-Lambda

Distortion  Rated 0.05% THD at 100 V at 1 kHz while driving an SR-Lambda

Internal Wiring  Super oxygen-free copper with giant crystals

Outputs  2 x headphone audio (plate) outputs, in parallel

Output  Rated 370 V RMS maximum output at 1 kHz.

Voltage  Rear-panel selectable 100 V, 117 V, 220 V or 240 V

Frequency  50 - 60 Hz

Power Consumption  Rated 33 Watts

Dimensions   5.9"W x 3.4"H x 14.2"D

Weight  4.41 lbs.

LINER NOTES

The sound from these Lambda Pros is simply extraordinary. It is natural, clean, open, delicate, powerful, detailed, precise and revealing, all at the same time. There is no distortion. Every instrument, voice and multitrack layer is heard distinctly, never mushed into anything else. Instead of loud walls of crud, one hears everything separately, regardless of how loud you enjoy your music. The Stax SR-Lambda Professional electrostatic headphones are the most perfect audio transducer I have ever heard.

-Ken Rockwell

STOCK NO. 7596945375453

This item is sold As-Described

This item is sold As-Described and cannot be returned unless it arrives in a condition different from how it was described or photographed. Items must be returned in original, as-shipped condition with all original packaging.Learn More.

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Listed4 years ago
ConditionExcellent (Used)
Excellent items are almost entirely free from blemishes and other visual defects and have been played or used with the utmost care.Learn more
Brand
Model
  • srm1
Categories

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Aural HiFi // Design in Stereo

Denver, CO, United States
Joined Reverb:2020

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