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PRO-JECT Tube Box E
Compact phono preamplifier with ECC83 tubes.
Compatible with MM and MC cartridges
Low-noise, dual-mono discrete circuitry
Precise two-stage RIAA equalization
Front controls: gain and subsonic filter
Rugged metal construction with EMI shielding
Warm, analog sound in a small package
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Pro-Ject Tube Box E: Compact Tube Phono Preamplifier (MM/MC)
The Pro-Ject Tube Box E is a compact yet powerful phono preamplifier, designed for vinyl lovers seeking an authentic, warm, and truly analog character without taking up much space. Its fully discrete dual-mono circuit (no operational amplifiers) delivers ultra-low noise, an open soundstage, and lush midrange, all inside a refined and elegant metal chassis.
Key Features
MM & MC compatibility – supports both moving magnet and moving coil cartridges with flexible gain and loading options.
Accurate RIAA equalization – passive/active split design for faithful vinyl reproduction.
100% analog design – discrete circuit with FET input stage for clean, transparent amplification.
Replaceable tube stage – equipped with 2 × ECC83 (12AX7A) tubes, easily swappable to fine-tune or upgrade sound.
Convenient front-panel controls – subsonic filter and gain settings within easy reach.
Dual-mono low-noise layout – enhanced channel separation with minimal distortion.
Premium parts & shielding – polystyrene capacitors, FET inputs, and aluminum housing for maximum EMI protection.
User Benefits
With the Tube Box E, there’s no need for bulky high-end gear: in a compact footprint, it delivers warm sound, silky mids, and unmistakable analog character. Its flexibility makes it suitable for almost any cartridge, while the solid build ensures long-lasting performance. It’s the perfect upgrade for anyone looking to take a significant step up in vinyl playback quality without complications.
Technical Specifications
Tubes: 2 × ECC83 (12AX7A)
Gain: 40, 43, 50, 53, 60, 63 dB
Input impedance: 10 Ω, 100 Ω, 1 kΩ, 2 kΩ (MC); 47 kΩ (MM)
Input capacitance (MM): 47, 147, 267, 367, 487, 587 pF
SNR: 77 dB (A-weighted) at 40 dB gain; 65 dB at higher gain settings
THD: <0.03% (40 dB); <0.07% (50/63 dB)
RIAA accuracy: ±0.5 dB (20 Hz–20 kHz)
Subsonic filter: 20 Hz, 18 dB/octave
Connections: 1 × RCA input, 1 × RCA output (gold-plated)
Power supply: external 18 V / 1 A DC; 470 mA in use, <1 W standby
Dimensions (W × H × D): 103 × 73 × 115 mm (131 mm incl. connectors)
Weight: ~450 g (without PSU)
Included in the Box
Pro-Ject Tube Box E preamplifier
External 18 V / 1 A power supply
User manual
Recommended Use
Ideal for upgrading from basic phono stages or for those who want tube warmth in a compact, minimalist design. Perfect for desktop setups or Hi-Fi systems with limited space.
Compatibility
Works with MM and MC cartridges, easily integrating with any turntable or integrated amplifier. Pairs especially well with Pro-Ject turntables and Hi-Fi systems focused on sonic purity and ease of use.
Pros and Cons
Pros:
Warm, analog sound in a compact form
Easy, quick front-panel adjustments
Wide cartridge compatibility
Replaceable tubes for sound customization
Cons:
Requires external power supply
No balanced inputs/outputs (RCA only)
5024000056
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