Pro-Ject Tube Box S - Valve MM/MC Phono Stage

Product no.: BOXS29

In stock

Price includes VAT, plus delivery
Possible delivery methods: UK Tracked with Signature, Airmail Standard, UK Express, Airmail Tracked with Signature, UK Standard, Heavy Item

That's because it fits perfectly into its price category, so it will be on your short-list - Hometheatre

 EnjoyTheMusic -  "The sound is full bodied, natural and warm, with a surprising degree of detail… The sound is spacious and there is good width and depth to the image

Setting the Sonic Standard for Entry-Level Tube Phono Stages

  • Adjustable Cartridge Gain & Loading Impedance 10/100/1k/ 47k ohms & Capacitive 100/200pF 

The Pro-Ject Tube Box S brings new levels of performance to cost-effective phono stages. A pair of graded ECC83 (12AX7A) tubes keeps your LPs sounding smooth, warm, and robust. The Tube Box S is built using the same high-grade metal chassis as the rest of Pro-Ject's innovative new "S Box" line.

This all metal case features great shielding from both vibration and electromagnetic interference, while selectable MM and MC modes and cartridge loading via bottom panel mounted switches ensure usability with virtually any cartridge. The Tube Box S's Gain is rated at 41dB, 51dB and 61dB (MC).


  • MM & MC support
  • Precise RIAA equalization
  • Double mono triode output stage
  • Impedance 10/100/1k/ 47k ohms adjustment
  • Capacitive 100/200pF adjustment
  • Gain 41/51/61dB adjustment
  • Subsonic filter
  • Metal casing protects against vibration and interference
  • Available in silver or black

The Tube Box S is a brand new phono pre-amplifier with a valve output stage that offers unrivalled performance and unique flexibility. It offers an extra step-up from Pro-Ject's introductory range of phono stages, while still maintaining a very appealing price point.

The sonic quality of the Tube Box S is extremely impressive, and offers a big improvement on the smaller Phono Box S model, making it an audiophile upgrade for almost any mid-priced analogue hi-fi system. With a wide range of setting parameters, it can meet the needs of almost any MM or MC phono cartridge on the market. The carefully selected audiophile-grade components make it possible to enjoy your valuable vinyl collection like never before.

The class-leading music reproduction qualities of Tube Box S gives pure dynamics, full transparency, analogue warmth, bass texture, detail resolution and purity of all audible frequencies. All in all, it effectively brings a retro ethic to modern phono electronics.

Key Features:

  • MM & MC support 
  • Precise RIAA equalisation 
  • Dual-mono triode output stage 
  • Switchable impedance settings  
  • Switchable capacitance  
  • Adjustable gain
  • Non-switchable subsonic filter
  • Metal casing protects against vibration and interference 
  • Improved circuitry and components when compared to the old Tube Box II

Technical Data:

Tubes: 2 x ECC83 (12AX 7A)
Input Impedance: 10/100/1k/2k ohms (MC)/47k ohms (MM) 
Input Capacitance: 50/150/270/370pF
Gain Switch: 
MM: 41dB 
MC: 51dB and 61dB
Noise Floor: 
84dB (94dB – IEC -A) @ 41dB 
67dB (75dB – IEC -A) @ 51dB and 61dB
THD: 0.01% MM/ 0.05% MC 
RIAA Deviance: Max. 0.4dB/20Hz - 20kHz 
Subsonic Filter: -12dB @ 20Hz (Non Switchable) 
In/Out Sockets: 1 Pair RCA/Phono Sockets
Line-Level Output: 1 Pair RCA/Phono Sockets
Outboard Power Supply: 18V/1000mA DC
Power Consumption: 470mA DC, <1W In Standby
Dimensions W x H x D: 103 x 74 x 104mm
Face Plate: Silver Or Black
Weight: 810g Without Power Supply


Pro-Ject  - Tube Box S  - Valve MM/MC  Phono Stage

Please note: You will need interconnect cables to connect this phono stage to your amplifier.NOT Included

Pro-Ject Phono CablesPro-Ject - Connect-IT CC - RCA to RCA Tonearm Cable with Ground Wire OFC 1.2M
Connect-IT Phono RCA-CC      
Connect-IT Phono RCA-SI

Pro-Ject  - Box-Design S Line Range of Audiophile Micro Components & Systems



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Pro-Ject Turntables and Phono Products


Pro-Ject Audio Systems is known for its beautiful range of price-friendly turntables. As the largest turntable manufacturer in the world, the company has helped power the resurgence of vinyl, which is predicted to overtake CD in popularity within a few years. Pro-Ject also manufactures a Wide range of Quality hi-fi components.

Pro-Ject products are the result of an exemplary cooperation within a rapidly uniting Europe. For over fifty years record players have been designed and built at Pro-Ject's manufacturing facility in Litovel, situated to the east of Prague. This plant is one of the most advanced manufacturers of precision mechanics in the country In cooperating with this company Pro-Ject Audio Systems, located in Vienna, found the ideal partner for their plans to produce the goods that they missed from amongst the vast flood of consumer hifi products - simple, uncluttered and utterly functional products.

Pro-Ject Audio Systems is currently one of the world's leading suppliers of record players, with a range of models designed to satisfy all levels of expectation and budget. In many countries of the world customers can rely on competent service and support from Pro-Ject distributors well versed in analogue record reproduction technology. Pro-Ject products exhibit sonic performance beyond all expectations normally associated with their price. they are simple to use, maintanance free and will function reliably a lifetime long. They also offer extraordinary value

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* Prices include VAT, plus delivery
Browse this category: PHONO STAGES MM/MC