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The Pro-Ject Tube Box DS is a valve-output phono pre-amplifier that offers improved performance over the original Tube Box S/E II, whilst maintaining an appealing price.
The Tube Box DS presents an impressive sound, making it a great audiophile upgrade for almost any mid-priced analogue hi-fi system. With a high-quality variable impedance dial and a switchable Sub-Sonic Filter, it can meet the needs of almost any MM or MC phono cartridge on the market. The carefully selected audiophile-grade components make it possible to enjoy your valuable vinyl collection like never before.
For cartridge matching, there is an extensive list of settings adjustment available. On top of the usual Gain and Capacitance adjustments, the Tube Box DS boasts a fully adjustable dial for attenuating the Input Impedance. This allows for perfect matching with almost any Moving Coil cartridge on the market, and it can even be adjusted during playback to tailor the sound perfectly to your preference.
The class-leading music reproduction qualities of the Tube Box DS deliver pure dynamics, full transparency, analogue warmth, bass texture, detail resolution and purity across all audible frequencies. All-in, it effectively brings a retro ethic to modern phono electronics.
|Valve Complement:||2x ECC83 (12AX 7A)|
|Input Impedance Settings:||MM: 47kΩ
MC: 10Ω to 1KΩ (Adjustable)
|Capacitance Settings:||47pF, 147pF, 267pF or 367pF|
|Gain Settings:||40dB, 50dB or 60dB|
|Noise Floor:||93dB (A Weighted) (41dB Gain)|
|RIAA Accuracy:||20Hz - 20kHz / max. 0.5dB|
|Subsonic Filter:||-18dB at 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 72 x 144mm
103 x 72 x 156mm (Incl. Sockets)
What is a Phono Stage?
A phono stage takes the low-level electrical signal, generated by the pick-up cartridge on your turntable, and amplifies it to LINE level. When it's at LINE level, you can connect the outputs of your phono stage to any LINE or AUX input on your amplifier. If you do not have a phono stage, when you connect the turntable to your amplifier the signal will be very quiet, and if you turn it up to normal listening level it will sound distorted and noisy.
You do not need an external phono stage if...
In both of these cases, the built-in phono stage needs to support your pick-up cartridge (see below).
Do I need a specific type of Phono Stage?
Yes. You need to buy a phono stage that suits your particular type of cartridge. If you have a Moving Magnet (MM) cartridge, you need an MM-compatible phono stage. If you have a Moving Coil (MC) cartridge, you need an MC-compatible phono stage. This is due to the different output levels of MM and MC cartridges (as MC cartridges are so quiet, they require more Gain).
What do all of the Setting adjustments mean?
Cartridges are complex micro-mechanical devices, and the way a phono stage treats the electrical signal they generate can dramatically impact the end sound quality. When setting adjustments are available, the one adjustment you always need to check, regardless of the cartridge, is Gain. The level of Gain directly affects all cartridges, as the ultimate task of a phono stage is to amplify the electrical signal.
After Gain, the type of Settings you need to adjust are dependent on the cartridge used...
Some phono stages have other Settings available, which are not cartridge dependent. For example...
For more help and advice visit our Tech Support section
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