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Open Box / B-Stock Notes
exterior grade: 8.0 out of 10 - very good
item cosmetic note: item shows light signs of use due to handling
item function: ✔️ tested
item exterior packaging: original, packaging may show damage
note: all open box / b-stock items are final sale
📌LAB POINTS
Pro-Ject's most affordable phono preamplifier
allows you to plug a turntable directly into a stereo system, amplifier, computer, or any other device that takes line level input.
low noise, low distortion
RCA inputs and outputs
flat RIAA equalization curve (what you want for a preamp)
LAB REVIEW
Most turntables need a phono preamp to work with stereos, computers, and speaker systems (unless your device has a "phono" input, which is rare). The Phono Box MM is a simple, cost effective solution which will convert your phono output into a low noise, low distortion, line level output.
🔑KEY FEATURES
input impedence: 47k ohms / 100pF
gain: 40dB
output voltage: 500mV / 1 kHz at 5mV
signal to noise ratio: 88 dB / A-weighted
THD: <0.04%
dimensions: 4.2 x 1.2 x 2.4 in., 107 x 30 x 61 mm; 9.9 oz., 280 g
📦COMES WITH
power supply
At USD67 for an open-box Pro-Ject Phono Box MM, this is a solid bargain—well below the typical used market range of USD80-120, where clean units with the wall wart often trade on audiophile forums and resale sites. New ones still fetch around USD100-150, so you're getting entry-level MM performance without paying full freight, assuming it's not heavily used.
Before biting, verify the outboard 18V DC power supply is included and tests clean—replacements run USD20-30 and it's a common missing piece. Also check RCA jacks for looseness or oxidation, as frequent swaps can wear the gold plating over time; power it up to confirm no hum or channel imbalance from the dual-mono board.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Pro-Ject Audio Systems traces its roots to 1991 in Austria's Weinviertel region, north of Vienna, where founder Heinz Lichtenegger launched the brand amid the CD revolution. Kicked out of music school as a youth, Lichtenegger channeled his passion for analog sound into affordable, high-quality turntables at a time when vinyl seemed obsolete. His debut Pro-Ject 1, hand-assembled in the Czech Republic, earned rave reviews as a top high-end device, igniting a success story that relocated headquarters to Vienna before returning to Mistelbach in Lower Austria.
The brand excels in turntables, establishing itself as the world's largest and leading producer in that category, while expanding into a full spectrum of hi-fi components since 2000. Offerings include amplifiers, DACs, headphone amps, speakers, cables, and phono stages, all emphasizing essential sound reproduction with durable materials and minimalist design. Manufacturing remains European—primarily in Czechia, Slovakia, and Germany—prioritizing sustainability through local sourcing, short transport, and products built for longevity.
Pro-Ject holds a commanding niche as the go-to for mid-tier audiophiles seeking boutique European craftsmanship without extravagant pricing. Distributed in over 80 countries, it appeals to vinyl revivalists and discerning buyers who value analog purity, innovation, and value-driven performance over flashy excess, cementing its reputation as a pioneer in accessible high-fidelity.
See all Pro-Ject listings on RADAR.
