ST7 vs Shelter Audio 411 Type II
The 411 Type II's output impedance is 47Ω against the ST7's 28Ω, its weight 1 kg (2 lbs) against 0.79 kg (2 lbs), its depth 106 mm against 102 mm, and its height 66 mm against 43.5 mm.
AI-generated product photo — not official manufacturer imagery.
AnalogPhono Step Up Transformers
Estimated price (community-sourced)
$923
Around — community and catalog average, updates slowly
About the ST7
The Ortofon ST-7 is a versatile dual-mono moving coil (MC) step-up transformer engineered to optimize low-output MC cartridges, such as the Ortofon Quintet Series, SPU Classic, and SPU #1 models. Featuring dual permalloy-core transformers with a sandwich winding structure for superior high-frequency response, low phase distortion, and exceptional channel separation, it delivers transparent signal transfer without added noise or coloration. The fully balanced, symmetrical internal layout, individual permalloy shielding for each channel, and low output impedance ensure a hum-free performance and black background. Housed in a compact, solid metal casing with rubber feet to minimize vibrations, brushed finish, and gold-plated RCA connectors for reliable connectivity, it seamlessly integrates into any hi-fi setup. Ideal for matching MC cartridges to MM phono stages, enhancing dynamics, resolution, and overall musicality.
Specifications
Analog Output
Analog signal output specifications
- Output Impedance
- 28Ω
Phono Preamplifier
Phono stage specifications
- MM Gain
- 24 dB
- Loading Options
- 47000Ω
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 122 × 43.5 × 102 mm (W × H × D)
- Weight
- 0.79 kg (2 lbs)
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions