# Pro-Ject Tube Box S2

Discover the warm, rich sound of vinyl with the Pro-Ject Tube Box S2, a high-performance phono preamplifier designed for audiophiles who appreciate the unique characteristics of tube amplification.

This phono preamp combines the benefits of tube technology with modern engineering, providing an exceptional listening experience that enhances the natural warmth and detail of your vinyl records.

**FEATURES**

-   **Tube Amplification**: Features high-quality tube amplification that delivers a warm, rich sound, enhancing the natural characteristics of vinyl playback.
-   **MM and MC Compatibility**: Compatible with both Moving Magnet (MM) and Moving Coil (MC) cartridges, offering flexibility to suit a wide range of turntables and cartridges.
-   **Adjustable Settings**: Provides adjustable gain and loading options, allowing precise tuning to match your specific cartridge for optimal performance.
-   **Premium Components**: Utilises high-end capacitors and resistors to ensure precise and clean signal processing, maintaining the integrity of the audio signal.
-   **Compact Design**: The sleek and compact chassis allows for easy integration into any audio setup, saving space while delivering high-quality performance.
-   **Shielded Metal Enclosure**: The robust metal casing protects internal components from electromagnetic interference and vibrations, ensuring clear and uninterrupted audio.
-   **High-Quality Power Supply**: Comes with a high-quality external power supply to ensure stable and clean power delivery, further enhancing sound quality.

Experience the warmth and richness of tube amplification with the Pro-Ject Tube Box S2, offering exceptional sound quality, versatile cartridge compatibility, and a compact design for a seamless and immersive audio experience.

###### Specifications

-   **INPUT IMPEDANCE (MM):** 47 kΩ
-   **INPUT IMPEDANCE (MC):** 10, 100, 1000, 2000?
-   **PHONO STAGE CAPACITANCE (MM):** Switchable 47, 147, 267, 367, 487 or 587 pF
-   **PHONO STAGE GAIN (MM):** 40, 43, 50 dB
-   **PHONO STAGE GAIN (MC):** 50, 60, 63 dB
-   **PHONO STAGE EQUALIZATION OPTIONS:** RIAA
-   **SUBSONIC FILTER:** at 20Hz with 18dB/octave
-   **RIAA ACCURACY (20HZ - 20KHZ):** within 0.4 dB
-   **VALVES:** 2 x ECC83
-   **THD (MM INPUT):** <0.02 %
-   **THD (MC INPUT):** <0.05 %
-   **NOISE FLOOR (MM):** 80 dBA
-   **NOISE FLOOR (MC):** 75 dBA
-   **RCA INPUT(S):** 1
-   **FIXED ANALOGUE OUTPUT(S):** 1 x RCA Pair
-   **EXTERNAL POWER SUPPLY RATING:** 18V-1000mA DC
-   **DIMENSIONS (W X H X D):** 103 x 73 x 113 mm
-   **WEIGHT:** 0.41 kg
-   **Warranty:** 2 Years

## Details

- **Price:** 359.0 GBP
- **Vendor:** Pro-Ject
- **Type:** Turntable Accessories
- **Tags:** BLACK5, SALE5, Showroom

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Black | 359.00 GBP | In stock |
| Silver | 359.00 GBP | In stock |

## Images

- Pro-Ject Tube Box S2 - K&B Audio
- Pro-Ject Tube Box S2 - K&B Audio
- Pro-Ject Tube Box S2 - K&B Audio
- Pro-Ject Tube Box S2 - K&B Audio
- Pro-Ject Tube Box S2 - K&B Audio

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> Source: [K&B Audio](https://www.kbaudio.co.uk/products/pro-ject-tube-box-s2)
> Updated: 2026-04-29