Pro-Ject Tube Box S2 – Tube-based Phono Amplifier for MM and MC Pickups
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Shipping Information
Orders placed before 3 PM on weekdays are shipped the same day - Free shipping on orders over 1000:- (within Sweden)
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Pro-Ject Tube Box S2 – Tube-based Phono Amplifier for MM and MC Pickups
Experience the classic tube sound with the Pro-Ject Tube Box S2 - a compact and innovative phono preamplifier featuring replaceable ECC83 tubes and a fully discrete circuit design without op-amps. This premium RIAA preamp from Pro-Ject Audio Systems delivers a warm, relaxed, and full-bodied sound with lush midrange and impressive detail. Perfect for both Moving Magnet (MM) and Moving Coil (MC) cartridges, and with tube rolling capability, you can easily fine-tune the sound character to your own taste.
The Tube Box S2 is designed for audiophiles who want the analog warmth of tube technology in a small, high-quality format - with low noise and high dynamics even with demanding MC cartridges.
Why choose the Pro-Ject Tube Box S2 tube phono preamplifier?
With its dual mono construction and convenient front controls, it offers exceptional flexibility and musicality. The robust build quality effectively protects against vibrations and interference for a cleaner vinyl experience.
Main features and benefits:
- Replaceable tubes - two ECC83 (12AX7) tubes that can be easily swapped for personalized sound tuning and tube rolling
- Fully discrete circuit design - no op-amps, only carefully selected components for a cleaner and more musical signal path
- Flexible cartridge matching - five impedance settings for MM (10-2k ohms), fixed 47 kohm for high-output MC, plus six capacitance values (47-587 pF) - all adjustable on the front panel
- Convenient front controls - gain selector (40-63 dB) and subsonic filter for easy optimization during listening
- Dual mono construction - separate circuit for each channel for better channel separation and deeper stereo image
- Low-noise FET input - extremely low noise and high dynamics, even at high gain settings
- Robust sandwich chassis - aluminum and metal construction that dampens vibrations and electromagnetic interference
Technical specifications:
- Tubes: 2 × ECC83 (12AX7, replaceable)
- Gain: 40 / 43 / 50 / 60 / 63 dB
- Input impedance: 10 / 100 / 1k / 2k ohms (MM) / 47 kohm (MC)
- Input capacitance: 47 / 147 / 267 / 367 / 487 / 587 pF
- Signal-to-noise ratio: Up to 80 dB (A-weighted at 40 dB gain)
- THD (total harmonic distortion): <0.02-0.05 %
- RIAA equalization accuracy: ±0.4 dB (20 Hz-20 kHz)
- Subsonic filter: 20 Hz with 18 dB/octave (activated via front button)
- Inputs/outputs: 1 × pair RCA (input) / 1 × pair RCA (output)
- Power supply: 18 V / 1000 mA DC (external power supply included)
- Dimensions (W × H × D): 103 × 73 × 131 mm (including connectors)
- Weight: 410 g (without power supply)
Shop for over 990 SEK and we’ll ship for free!
If you order before 3 PM on weekdays, we will ship the same day, provided the item is in stock. Normal delivery time is 1-5 business days, but during high order volumes or for certain products, delivery may take longer. If any of the items you ordered are out of stock, we will notify you as soon as possible.
We want you to be 100% satisfied with your purchase. Items can be returned or exchanged within 14 days of delivery. For exchanges or purchases of a new item in connection with a return, we cover the return shipping cost. Please note, however, that there are exceptions where free return shipping does not apply, such as large and heavy items or expensive shipping relative to the item’s value. This is decided on a case-by-case basis.
What does our stock status mean?
In stock - Ships immediately the same day if ordered before 3 PM (weekdays)
3-8 days - In stock at supplier and ordered immediately
4-12 days - In stock at supplier and ordered immediately
We offer a warranty of at least 2 years on all products, and some items come with an extended warranty of up to 5 years. This way, you avoid costly insurance and can feel secure as a customer. If any issues arise during the warranty period, you are welcome to contact us, and we will resolve it quickly and smoothly.
- Versatile payment options and secure transactions. Invoice or installment payment with Klarna, card payment, etc.
- Fast deliveries: Orders received before 3 PM are shipped the same day
- Secure product delivery with reliable logistics partners (DHL & UPS)
- Price guarantee to ensure our customers get the best possible deal
- Fast & professional customer service via email and phone. (email responses within 24 hours)