Pro-Ject Tube Box S Phono PreAmplifier

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Page last updated Mar 31, 2026

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Description

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Elevate your vinyl listening experience with the Pro-Ject Tube Box S Phono PreAmplifier. Designed for both audiophiles and professional musicians, this phono preamplifier integrates high-quality vacuum tube technology to deliver a warm, rich sound that truly brings your records to life. Whether you’re spinning classic rock or modern jazz, the Tube Box S ensures every note is captured with impeccable clarity and detail.

This compact yet powerful unit is compatible with both Moving Magnet (MM) and Moving Coil (MC) cartridges, offering versatile connectivity options for various turntables. Its low-noise circuitry amplifies signals with precision, minimizing distortion and preserving the integrity of your music. The adjustable gain settings make it easy to match the output level to your system requirements, providing flexibility for different audio setups.

The Tube Box S also features a subsonic filter to eliminate low-frequency rumble, enhancing your listening experience without the interference often caused by vibrations. Its elegant design makes it a stylish addition to any audio setup, while the robust build ensures long-lasting performance.

Key Features:

High-quality vacuum tube technology for rich, warm sound
Compatible with both Moving Magnet (MM) and Moving Coil (MC) cartridges
Low-noise circuitry for clear audio amplification
Adjustable gain settings for flexibility with different audio systems
Subsonic filter to reduce low-frequency rumble
Compact design for easy integration into any audio setup
Durable construction for reliable, long-term use

Videos

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Techmoan

Getting back my Vinyl Sound with a Pro-Ject Tube Box S Phono Preamplifier

Techmoan

PRO-JECT Tube Box S MM/MC Phono Preamp Review

6AM

Pro-Ject Tube Box S

2ndhandhifiuk

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Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Pro-Ject Tube Box S Phono PreAmplifier.

Features and functionality

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The Pro-Ject Tube Box S offers flexibility in gain and capacitance settings, allowing users to match the preamp to their cartridge for optimal sound customization.
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The Pro-Ject Tube Box S2 features cartridge loading adjustments on the bottom, offering flexibility to tweak audio output.
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Comparisons

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Some users find the Pro-Ject Tube Box S less bright than the Schiit Mani, which may appeal to those seeking a warmer sound profile.
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Mods and upgrades

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Owners suggest upgrading to an Ortofon 2M Bronze stylus for significant sound improvement over the Blue, although the generator differences mean it's not a full Bronze experience.
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Swapping stock tubes for new production Mullards can reduce sibilance, although it may lead to a muddier low end.
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Gold Lion tubes are recommended for the Pro-Ject Tube Box S2, noted for quality among current production 12AX7 options.
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Use cases and applications

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The Pro-Ject Tube Box S is recommended for those who prefer a hybrid tube preamp setup, potentially offering a different tonal character than a solid state or pure tube preamp.
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Value and pricing

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The Pro-Ject Tube Box S is considered a great value, especially when found as an open box deal, providing quality sound with customization options at a competitive price point.
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Setup and maintenance

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Adjusting the cartridge loading from 100ohm to 470ohm may tighten the low end, aiding in achieving a balanced sound.
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It's easy to replace tubes in the Tube Box S2; remove the tube cages with an Allen wrench and pull the tube out carefully after powering down and cooling.
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Pricing and availability

Description

Videos

Reviews

Owner Insights

Features and functionality

Comparisons

Mods and upgrades

Use cases and applications

Value and pricing

Setup and maintenance

More Pro-Ject Home Amplifiers

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