SW1X Audio Design™ PRE I Performance Level 1
The PRE I is a pure class A, Output Transfomerless (OTL) line pre-amplifier with Power Valve Output Stage. Employing El84 power tubes at the output makes the PRE I a smaller brother to the SW1X PRE II Pre-amplifier. It is great enhancement to any tube power amplifier and ideal partner to our DAC I and II STD/SPX and LPU I Phono products, reducing their output impedance further and enhancing their sound with fullness and authority. With a help of of a PRE I, any source becomes unleashed to drive subsequent power amplifiers to its full potential.
The PRE I can be ordered with differnt series of SW1X Stepped Attenutator Volume Contols.
SW1X Audio Design™ PRE I Line Pre-amplifier Features:
- Harmonically matched Component & Material Quality
- Output Transfomerless (OTL) EL84 Power Valve Output Stage
- 1 x Double triode 6N6P driver, 2 x EL84 Triode Connected Power Valve Amplificaton Design
- Hybrid Point 2 Point Hardwiring Technique for the most consistent production results
- 5Y3 Directly heated Tube rectified CLC (choke filtered) B+ power supply
- For maximum transparency & dynamics, the circuit is hard wired with of a specially selected conductors (single strand or Litz)
- Internally wired exclusively with our SW1X Magnum, Genesis and Opus conductors
- 1 x SW1X Audio Design™ Stereo, 24 Way, discrete resistor Stepped Attenuator (optional in SPX Version)
Tube Compliment: 2 x EL84, 1 x 6N6P, 1 x 5Y3
PRE I SPX Line Pre-Amplifier
Note: Due to SW1X Audio Design’s ongoing research and development process, specifications are subject to change without notice.
Dimensions: Height (mm) 150 x Width (mm) 330 x Depth (mm) 400
Weight (kg): 10 (with LPX Phono, 12kg)
Max Power Consumption (W): 110
Output Noise, Unweighted (mVrms): < 0.5
Output Impedance (Ohms): 10
We do not recommend purchasing a key system component without first auditioning it carefully, which is why we have demonstration rooms and a flexible home loan policy.
However in certain situations it can be difficult for people to get to our showroom and for those instances we can offer our mail order service.