BOX X3 MM Phono Tube Preamplifier with Bluetooth 5.0 Receiver, RCA and 3.5mm AUX Inputs and Power Adapter

The BOX X3 tube preamplifier brings an MM turntable, a 3.5mm AUX source or Bluetooth audio into a home stereo system through its RCA line output. It connects to powered speakers or a separate amplifier; it does not drive passive speakers directly.

Key Features

• The MM phono stage converts a moving-magnet turntable signal to line level with RIAA equalization.
• Bluetooth 5.0 reception supports wireless audio input. The unit is a receiver and does not transmit Bluetooth audio.
• RCA phono and 3.5mm AUX inputs provide wired connections alongside Bluetooth.
• Two included vacuum tubes form part of the preamplifier design.
• The RCA output feeds powered speakers or an external amplifier. Passive speakers require a separate amplifier.
• A 12V 1.5A power adapter is included; its documented AC input range is 100–240V. The preamplifier itself uses 12V DC.

Specifications

• Model: BOX X3
• Inputs: RCA phono, 3.5mm AUX and Bluetooth 5.0
• Phono compatibility: MM, moving-magnet turntables
• Output: RCA line level
• Equalization: standard RIAA
• Total harmonic distortion: ≤0.1%; signal-to-noise ratio: ≥98dB
• Output voltage test: 650mV with a 3mV input at 1kHz
• Device power input: 12V DC
• Included power adapter: 12V 1.5A output, AC 100–240V input
• Dimensions: 4.66 × 3.85 × 1.29 inches
• Product weight: 320g, approximately 0.71lb
• Included: one preamplifier, two vacuum tubes, one Bluetooth antenna, one power adapter and one user manual