No. 523 vs Soulution 550 phono
The 550 phono's output impedance is 10Ω against the No. 523's 80Ω, its weight 20 kg (44 lbs) against 17.69 kg (39 lbs), its width 442 mm against 438 mm, and its depth 448 mm against 457 mm.
AI-generated product photo — not official manufacturer imagery.
AmplifiersPre-AmplifiersPhono Pre-AmpsHeadphone Amplifiers
Estimated price (community-sourced)
$9,925 - $18,500
Around — community and catalog average, updates slowly
About the No. 523
The Mark Levinson No. 523 is a six-input preamplifier that includes two balanced (XLR) and three single-ended (RCA) line-level inputs, along with a phono input. It provides balanced (XLR) and single-ended (RCA) stereo outputs, as well as a 1/4-inch (6.3mm) headphone output. The Pure Phono stage is designed with no op-amps and operates in class A, offering settings for both Moving Magnet (MM) and Moving Coil (MC) cartridges. The preamplifier also features a discrete, balanced R-2R Ladder volume control and a selectable fourth-order, 80 Hz high-pass filter for subwoofer integration.
Specifications
Analog Output
Analog signal output specifications
- Output Impedance
- 80Ω
Phono Preamplifier
Phono stage specifications
- Adjustable Loading
- Yes
Connectivity
Input and output connections
- Ethernet
- Yes
- Digital Inputs
- USB-A, Mini USB
- Analog Inputs
- XLR, RCA
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 438 × 95 × 457 mm (W × H × D)
- Weight
- 17.69 kg (39 lbs)
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions