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.
- A5719
- Orig. MSRP
- $799
- Restoration
- Full 30-point service check
- Cleaned controls, switches, and chassis
- Factory 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.
- Documentation
Stax SR Lambda Pro / SRM-1 MkII Pro Brochure
- 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.
- 7647081234653
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.
A5719
Orig. MSRP
$799
Restoration
- Full 30-point service check
- Cleaned controls, switches, and chassis
Factory 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.
Documentation
Stax SR Lambda Pro / SRM-1 MkII Pro Brochure
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.
7647081234653
