Pro-Ject Tube Box S3 B is an audiophile-grade tube phono preamplifier featuring a fully balanced circuit design, created for accurate and musical vinyl playback. It supports both MM and MC cartridges and is designed for high-end systems requiring true balanced signal paths.
The use of vacuum tubes delivers a warm, natural and harmonically rich analog sound with excellent micro-dynamics and soundstage depth.
🔊 Sound:
• Warm, rich and engaging tube sound character.
• Detailed midrange with smooth, fatigue-free treble.
• Wide and deep soundstage with precise instrument placement.
🎼 Circuit design & components:
• True balanced architecture for maximum signal purity and low noise.
• Two ECC83 (12AX7) vacuum tubes in the signal path.
• Compatible with MM and MC cartridges.
• Precise RIAA equalization using high-quality audiophile components.
⚡ Connectivity & adjustments:
• Balanced XLR inputs and outputs for fully balanced systems.
• Unbalanced RCA inputs and outputs for universal compatibility.
• Adjustable loading and capacitance for optimal cartridge matching.
• Built-in subsonic filter to eliminate low-frequency rumble.
📏 Build & design:
• Rigid metal chassis with excellent shielding.
• External power supply for reduced noise.
• Compact form factor with classic Pro-Ject aesthetics.
🎯 Who it’s for:
• Vinyl enthusiasts using MM or MC cartridges
• Balanced Hi-Fi and High-End audio systems
• Listeners who appreciate warm, natural tube sound
• Perfect match for Pro-Ject turntables