Description
Tube phono-preamplifier
- Improved version of the Phono Box S
- Valve output adds more analogue warmth
- Widely compatible with MM and MC cartridges
S-Line
The Tube Box S from Pro-Ject Audio Systems offers un-rivalled performance, exceptional sonic ability and unique flexibility for a very competitive price.
The dual-mono configuration, audiophile amplifier modules and polypropylene capacitors allow for a dynamic soundstage with ample detail; yet the addition of two ECC83 valves (one per-channel) adds new life and realism to the musical performance. The sturdy casework and external power supply further help to reduce the effects of outside interference, like other models in the S Line, but the Tube Box S also externalises its valves for optimal heat dissipation.
Where the Tube Box S takes another step up in ability is in its various setting adjustments. Using the dip-switches underneath the chassis (there are two sets - one for each channel), it's possible to more accurately match the turntable cartridge's technical characteristics. The dip switches allow for various Gain, Impedance and Capacitance settings. The built-in Sub-Sonic Filter further helps tailor the sound, rolling off any problematic rumble that may appear underneath 20Hz.
The sonic quality of the Tube Box S is extremely impressive and offers a notable improvement over any other S Line phono stage, making it an audiophile upgrade for almost any mid-priced analogue hi-fi system.
Key Features:
- Phono stage with extensive MM & MC compatibility
- Precise RIAA equalisation
- Dual-mono configuration with triode output stage
- Audiophile-grade polypropylene WIMA capacitors
- Switchable Impedance settings
- Switchable Capacitance
- Adjustable Gain
- Sub-Sonic Filter built-in
- Metal casing protects against vibration and interference
Specification
Technical Data
| Valve Complement: | 2x ECC83 (12AX 7A) |
| Input Impedance Settings: | MM: 47kΩ MC: 10Ω, 100Ω, 1KΩ or 2KΩ |
| Capacitance Settings: | 50pF, 150pF, 270pF or 370pF |
| Gain Settings: | 41dB, 51dB or 61dB |
| Noise Floor: | 94dB (A Weighted) (41dB Gain) 75dB (A Weighted) (51dB & 61dB Gain) |
| THD: | MM: <0.01% MC: <0.05% |
| RIAA Accuracy: | 20Hz - 20kHz / max. 0.4dB |
| Subsonic Filter: | -12dB @ 20Hz |
| Input: | 1x Pair RCA / Phono Sockets |
| Line-Level Output: | 1x Pair RCA / Phono Sockets |
| Power Consumption: | 470mA DC |
| Outboard PSU: | 18V / 1,000mA DC (UK Plug) |
| Dimensions: | 103 x 74 x 125mm 103 x 74 x 137mm (Incl. Sockets) |
| Weight: | 810g |
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