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About the SL1 III
The Convergent Audio Technology SL1 III is a legendary tube preamplifier that has been continuously refined since its original release in 1985. It features separate line and phono circuits using a complement of 6922 and 12AX7 tubes, with the MKIII version specifically using 6922 tubes in the line stage positions for improved performance. The preamplifier offers exceptional channel separation (>90dB), ultra-low distortion (<0.0005% line, <0.001% phono), and a wide frequency response (0.1Hz to 800kHz line, 20Hz to 20kHz phono). It includes a user-adjustable input impedance for phono cartridges and a high maximum output voltage of 50V RMS. The chassis is constructed from 1/8" steel with internal resistive damping compound to minimize resonance, contributing to its reputation for sonic clarity and musical realism. The SL1 III is supplied with a separate power supply connected via an umbilical cable. It is considered by many audiophiles as one of the best preamplifiers in the world, with a price reflecting its status and build quality.
Specifications
Power Specifications
Amplification power output and characteristics
- Amplifier Class
- tube
- Input Impedance
- 50000Ω
- Max Input Voltage
- 100.0V RMS
Analog Output
Analog signal output specifications
- THD
- 0.001%
- SNR
- 98 dB
- Output Voltage
- 50.0V RMS
- Output Impedance
- 100Ω
Connectivity
Input and output connections
- Analog Inputs
- RCA
- Analog Outputs
- RCA
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 490 × 135 × 310 mm (W × H × D)
- Weight
- 29.1 kg (64 lbs)
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions