Audibax PP4000 Silver - RIAA phono preamplifier with headphone output and ON/OFF switch

Audibax PP4000 Silver - RIAA phono preamplifier with headphone output and ON/OFF switch

The Audibax PP4000 Silver is a compact RIAA phono preamp designed to adapt the low-level signal from a turntable to line level , allowing it to be connected to mixers, amplifiers, interfaces, or recorders that lack a dedicated phono input. It features a stereo RCA input with a ground connection to minimize hum, an RCA line output , and a 6.35 mm stereo headphone output for monitoring the signal after it has been equalized according to the RIAA curve. Additionally, it includes an ON/OFF switch and a power LED , features uncommon in its category, for convenient system control.

Main features

• Precise RIAA conversion : adapts the phono signal from cartridges to line level with S/N 70 dB and THD < 0.05% .
• Complete connections : stereo RCA input with ground terminal ; RCA line output; 6.35 mm headphone output .
• Direct control : ON/OFF switch and status LED on the top panel.
• Levels and compatibility : max. input -23.5 dBV ; max. output +10 dBV ; 47 kΩ input impedance and 50 Ω output impedance.
• Power supply : included 12V DC adapter (typical consumption 0.15A ).
• Portable format : Silver -colored chassis, 104.6 × 35.3 × 65.14 mm and 210 g .

Product benefits

• Clean and stable sound thanks to RIAA equalization and grounding that reduces induced noise.
• Immediate monitoring with headphones from the unit itself, useful for testing and digitization.
• Easy integration into any audio chain with line inputs (amplifiers, active speakers, interfaces).
• Practical operation with ON/OFF switch and LED, without having to disconnect the power supply.
• Compact size ideal for home studios, DJ booths and portable equipment.

Use cases

• Home Hi-Fi : Connect turntables to amplifiers or active speakers without a phono input.
• Vinyl digitization : sending the signal to line-level interfaces/recorders.
• DJ booths and bars : quick integration into mixers and audio matrices.
• Educational or museum facilities : vinyl reproduction with local control and monitoring.

Frequently Asked Questions

Is it compatible with any turntable?
Yes, it works with standard phono signal turntables and moving magnet cartridges (47 kΩ input). If your turntable has a built-in preamp, disable it to use the PP4000.

What is the purpose of the ground terminal?
To connect the turntable's ground wire and prevent buzzing caused by ground loops.

Can I listen directly with headphones?
Yes, it has a 6.35 mm headphone output for monitoring the line-level converted signal.

Does it include the power supply?
Yes, it comes with a 12V DC adapter .

Installation and connection

• Connect the RCA cables of the turntable to the phono input and the ground wire to the ground terminal.
• Connect the PP4000's RCA output to a line input on your amplifier/mixer/interface.
• If desired, connect 6.35 mm headphones for monitoring.
• Power it with the included 12V DC adapter and use the ON/OFF switch to activate the unit.

Project description

RIAA phono preamplifier with stereo RCA input and ground terminal; RCA line output and 6.35 mm headphone output; S/N 70 dB; THD < 0.05%; crosstalk −75 dB; max. input level −23.5 dBV; max. output level +10 dBV; input impedance 47 kΩ; output impedance 50 Ω; 12 V DC power supply (included); current consumption 0.15 A; dimensions 104.6 × 35.3 × 65.14 mm; weight 210 g; color Silver.