Pro-Ject Tube Box S2

Tube phono preamplifier (MM/MC) with discrete circuit design

An external phono preamplifier is essential if the existing amplifier does not have a connection for a turntable or if the built-in phono preamplifier does not meet the music lover's quality requirements. It is then connected to a high-level input on the amplifier. Every pickup performs best in an optimal electrical environment. It is therefore advantageous if a phono preamplifier has the appropriate output capacitance, output resistance, and output impedance. Every pickup performs best in an optimal electrical environment. It is therefore advantageous if a phono preamplifier can be finely adjusted in terms of terminal capacity, terminal resistance, and amplification to meet the requirements of the pickup. The Pro-Ject Tube Box S2 is a high-quality tube phono preamplifier with a discrete

The Pro-Ject Tube Box S2 is a high-quality tube phono preamplifier with discrete circuitry in the signal path. Components selected for their sound quality, such as polystyrene capacitors, ensure the finest sound. The device has a wide range of adjustment options for the termination capacitance of MM, moving iron, and high-output MC cartridges, as well as for the termination resistance for low-output cartridges. The device has a wide range of adjustment options for the load capacitance of MM, moving iron, and high-output MC cartridges, as well as the load resistance for low-output MC cartridges. The gain can be adjusted in six steps. The gain setting is not linked to an operating mode. The gain setting is not linked to a specific operating mode. All settings can be used for both MM and MC operating modes. The gain setting is stored in a permanent memory and is therefore not lost when the device is disconnected from the power supply. The two ECC83 tubes (internationally known as 12AX7) protruding from the top of the housing for better heat dissipation and for their characteristic appearance are high-quality

The two ECC83 tubes (internationally known as 12AX7) protruding from the top of the housing for better heat dissipation and for their characteristic appearance are high-quality double triodes manufactured to a standard that has been proven hundreds of thousands of times over. The supply of these tubes is therefore absolutely guaranteed in the long term. The technology for good sound quality

Technology for good sound

• Tube configuration: two ECC83 (12AX7) double triodes
• No ICs in the signal path
• Adjustable termination capacitance and termination resistance:
  Terminating resistance: continuously adjustable 10 ohms, 100 ohms, 470 ohms, 1 kohm, and 2 kohms (low-output MC cartridge)
  Terminating capacitance/resistance: 47 pF, 147 pF, 267 pF, 367 pF, 487 pF, and 587 pF / 47 kΩ (high-output MC, moving iron, and MM cartridges) Gain: 40 dB, 43 dB, 50 dB, 53 dB, 60 dB, and 63 dB
• Gain: 40 dB, 43 dB, 50 dB, 53 dB, 60 dB, and 63 dB
• Switchable subsonic filter
• External power supply (included)

Source: www.audiotra.de