Phono preamplifier Pro-Ject Tube Box S2 Ultra

Pro-Ject Tube Box S2 Ultra

Innovative miniature phono stage with tube output and high quality sound! The Tube Box S2 is the first Pro-Ject product to feature completely hidden circuitry without the use of OpAmps (OpAmps). In addition, it is the first product to feature replaceable rewind and sound shaping lamps. This allows you to choose from a variety of options and change the sound signature according to your preferences. The Tube Box S2 delivers a full and quiet, relaxed sound with rich mids, as you would expect from a more powerful high-end tube phono stage. It supports MM and MC cartridges and has many front-panel switchable gain settings. Five variable input impedance settings are available to suit any MM cartridge, while the 47K ohm input impedance is fixed and suitable for high output MC cartridges. The aluminum/metal housing matches the DS2 line in appearance and protects against vibration and EMI for superior sound.

Features

• Limited edition
• Suitable for MM and MC cartridges
• Precise RIAA equalization in two parts, passive/active
• Fully discrete circuit without op amp
• 2 ECC83 bulbs (replaceable)
• Subsonic filter button on the front
• Front Gain Control
• Ultra-low noise circuit with FET front end
• Dual mono circuitry for optimized channel separation
• Polystyrene capacitors are used where possible
• Gold plated RCA inputs and outputs
• External power adapter and multiple internal power supplies
• Well filtered high voltage anode power supply
• Multilayer aluminum/metal housing protects against vibration and EMI
• Comes in silver or black

User manual