Artemis Labs LA-1 Ppreamplifier

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Artemis Labs LA-1 Preamplifier

 
Artemis Labs LA-1

 

 

Artemis Labs LA-1

 

The Artemis Labs LA-1 Line Pre Amp combines the clean, accurate sound of a purist single-triode line amplifier with the convenience and reliability of a solid, well-built product.

 

Special care is taken with all parts in the audio path, from the Goldpoint• stepped attenuator to the custom wound output chokes. The sonic clarity and detail are outstanding.

 

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Artemis Labs LA-1 Key Features

 

5 inputs, 2 outputs

Five stereo inputs available at the flick of a switch. Two pairs of RCA output jacks allow connections to sub-woofer or signal processor, as well as power amplifier.

 

12dB maximum gain

Provides adequate gain for most sources without the hum and noise caused by excessive gain.

 

Goldpoint• stepped attenuator volume control

Series-type stepped attenuator using precision metal-film resistors by Dale and switch mechanism by Elma (Swiss).

 

Dual conductive-plastic balance controls

A separate potentiometer is used to balance each channel. This allows maximum gain in the normal balanced condition and permits the use of high-quality conductive plastic pots with no sonic degradation yet infinite resolution

 

Mono/Stereo switch with LED indicator

The left and right channels can be merged, with a yellow LED indicating the mono condition.

 

One 5687 tube per channel in Cool-Swap• Configuration

An idle spare in each tube, plus tubes run cooler

 

Choke loads for each triode

Allows tubes to run in their most linear mode and permits lower plate supply voltage

 

Low-Gain MOSFET high voltage regulation

One regulator per channel minimizes cross-talk and gives a firm, stable sound without sounding •solid-state•

 

All Artemis PreAmps Designed and built in the United States using the best parts from around the world

Artemis Labs LA-1 Specifications

 

Maximum Gain (47K load, 1KHz): 12dB +/- 1.5dB


Frequency Response & Distortion:

Worst-case Loading (8K ohms, 1000pF):

Worst-case settings (Input Attenuator and Balance both at -6dB):

Frequency Response: < 10Hz • 32KHz +/- 0.5dB

Average settings (Input Attenuator at -16dB, Balance at -1.5dB):

Frequency Response: < 10Hz • 40KHz +/- 0.5dB

THD+N at 1KHz, 2Vrms output: < 0.12%

Average Loading (47K ohms, 250pF):

Worst-case settings (Input Attenuator and Balance both at -6dB):

Frequency Response: < 10Hz • 45KHz +/- 0.5dB

Average settings (Input Attenuator at -16dB, Balance at -1.5dB):

Frequency Response: < 10Hz • 60KHz +/- 0.5dB

THD+N at 1KHz, 2Vrms output: < 0.05%

Maximum output voltage (47K load, 1KHz, 0.5% THD): 40Vrms
Output Noise (grounded input, 47K load, rms detector):
   22Hz - 30KHz: < -82dB below 2Vrms output
   •A-weighted•: < -85dB below 2Vrms output

Crosstalk:
   1KHz: < -75dB
   20KHz: < -45dB

Effective Output Impedance: approx. 750 ohms (1KHz)
Input Impedance: 30K to 50K ohms, depending on Input Attenuator and Balance control settings.


Mains Voltage: Wired at factory for one of the following voltages: 100, 110, 120, 220, 230, 240V, 50 to 60Hz.


Power Consumption (rms) : 30 Watts nominal, 38 Watts maximum.
Size: 6 •" (165 mm) Height, 8 •" (216 mm) Width, 14 5/8" (371 mm) Depth.
Mass: 22 lbs. (10Kg)

 

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More information can be found in the following pdf file downloads :

Artemis Labs LA-1 User Manual

Artemis Labs LA-1 Features

Artemis Labs LA-1 Handout

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