Pro-Ject Audio Systems MC Step-Up Box S3
Best upgrade for vinyl enthusiasts using low-output moving coil cartridges.
This passive transformer is the ultimate bridge for audiophiles who refuse to compromise on their existing MM phono stage. By boosting your MC cartridge signal without introducing active noise or distortion, it delivers a remarkably pure, dynamic sound that active preamps simply cannot replicate.
$549.00
Out of stock
Owner Satisfaction
4.7
/
5
Category Rank
200
/
794
#200 in Phono Preamps
Price vs Category Average
-93%
Below average
Frequency response
10551
/
Hz – kHz (+/- dB)
Who it's for
- Listeners wanting to utilize their existing MM phono stages
- Audiophiles seeking natural, low-noise signal amplification
- Vinyl enthusiasts using various moving coil cartridges
Who should skip it
- Owners of exotic cartridges requiring precise impedance loading
- Users with entry-level or noisy MM phono stages
- Minimalists preferring simple, compact audio setups
Performance breakdown
Signal Transparency
Passive transformer design preserves the raw character of your vinyl recordings.
Noise Floor
Virtually silent operation ensures delicate micro-details remain completely undisturbed.
Build Integrity
Rigid aluminum chassis provides excellent shielding against unwanted electromagnetic interference.
Dynamic Range
Delivers a lively, punchy presentation that brings complex arrangements to life.
Channel Separation
Dual-mono architecture creates a wide, precise soundstage for immersive listening.
Compatibility
Optimized for specific MC cartridges, offering focused performance over universal flexibility.
Key Specs
Frequency response
10Hz – 55kHz (+/- 1dB)
Gain at 10-40 ohms
21dB at 1kHz
Gain at 40-150 ohms
24dB at 1kHz
Recommended load
47k ohms / 100pF
Input
1x pair RCA phono sockets
Output
1x pair RCA phono sockets
Dimensions
206 x 65 x 164mm
Weight
940g
Know before you buy
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