Threshold NS-10

Threshold Model NS-10 Audiophile Stereo Preamplifier

The Threshold NS10 was Nelson Pass first preamplifier bearing the Threshold name. And was one of those early over the top products from the mind of Nelson Pass. Two channel, low signal level processing component having selectable input facilities for two velocity characteristics phono cartridges, four constant amplitude preamplified sources and record/monitor facilities for two tape recorders. Two pair of preamplifier outputs are provided as well as front panel controlled power for the Threshold preamplifier accessory modules. This NS10 Preamp is in perfect working order and is in excellent cosmetic condition with some scratches, tiny dents and chips but nothing major. This item is from a smoke-free and pet-free environment. Review all photos for additional detail and condition of the actual item for sale and ask question before placing your bid. As with any electronic unit of this age, this item is Sold As-Is but guaranteed to work upon arrival. Shipping to lower 48 states only.

Specifications:

Frequency Response: 1Hz through 50mHz
Rise Time: 25 nanoseconds
Propgation Time: Input to output propgation delay,approximately 10 nanoseconds.
Through the System Specifications:
Frequency Response: +0,-3dB 1Hz through 1 mHz
Distortion: Total harmonic and intermodulation distortion less than .005 percent at 1 volt output for both phono and high level stages.Below test equipment residual for distortion components higher than 3rd harmonic.
Maximum output before clipping: 10 volts peak
Magnetic phono input stage overload point: 1 volt peak at 20 kHz, 2 volts peak at 100 kHz
Slew capability: Maximum voltage slewing rate 100 volts per microsecond.
Impedance: Magnetic phono inputs 47 kohms, high level inputs 225 ohms, preamplifier outputs 1 kohm
Gain factor: Magnetic phono stage + 40 dB at 1 kHz, high level stage variable to + 20dB
Hum & Noise: -70dB unweighted through magnetic phono stages,reference to 1 volt output 20Hx through 20 kHz."

Threshold 400 A amplifier is also available thru seperate auction