Pro-Ject Tube Box S - MM/MC Phono Preamp w/Tube Output Stage


Lightly used and working perfectly. Handmade in Europe.

$449 MSRP but usually sold out or backordered due to demand and production delays.

Best way to put a bit of tube magic into your system for a small investment.

Click below to add our recommended matching cables from Kimber Kable, all brand new as SkyFi is an official Kimber dealer.

Kimber Kable - RCA Interconnects 

Kimber Kable - Phono Interconnects

More from Pro-Ject:
The classic Tube Box S phono preamplifier with tube output stage offers performance and flexibility that’s rare to come by at its price. With its wide range of settings, it’s suitable for use with almost any phono cartridge on the market. Carefully selected audiophile-grade components make it possible to enjoy your valuable vinyl collection like never before. The class-leading music reproduction of Tube Box S is dynamic & transparent with ‘tubey’ warmth, bass texture, detail resolution, and a clean overall presentation across the frequency spectrum.

• Audiophile performance
• Audiophile-grade ECC83 (12AX7)
• Dual-mono configuration
• Audiophile-grade polypropylene WIMA capacitors
• Precise RIAA equalisation
• Switchable input impedance/capacitance
• 3 adjustable gain levels
• Subsonic filter
• DC power supply (< 1 watt standby power)
• Handmade in Europe

• Input impedance: 10/100/1k/2k ohms (MC)/ 47k ohms (MM)
• Input capacitance: 50/150/270/370 pF
• Gain switch: 41/51/61 dB
• Signal-to-noise ratio MM: MM (41 dB): 84 dB (94 dB – IEC -A)
• MC: (51/61 dB): 67 dB (75 dB – IEC -A)
• THD: 0.01% MM/ 0.05% MC
• RIAA deviance: max. 0.4 dB / 20 Hz – 20 kHz
• Subsonic filter: -12 dB @ 20 Hz (fix)
• In/Out sockets: 1 pair RCA connectors
• Power consumption: 470 mA / < 1 watt in standby
• Power supply: 18 Volt DC/1000 mA
• Dimensions (W x H x D): 103 x 74 x 137 mm (with sockets)
• Weight: 810 g without power supply



Original Box

Yes Included


Yes Included


Not Applicable


Yes - Power Only

Physical Condition

8 / 10

Working Condition

10 / 10

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