Andover Audio Introduces
EA-AMP4
Planar Magnetic Headphones
MEET THE EA-AMP4 SERIES
AMP4 Vacuum Tube Phono Preamp & Headphone Amplifier
The Douk Audio T4 PRO tube preamp is a versatile HiFi solution designed to meet the demands of vinyl enthusiasts and audio lovers alike. It features a Moving Magnet (MM) phono input that converts phono signals to line-level output with low-noise integrated circuits and premium components for clear, detailed sound reproduction.
Key Features:
MM Phono Input & 3.5mm AUX: Converts phono signals and amplifies low-level audio from phones, tablets, PCs, MP3 players, and more—perfect for driving amplifiers or active speakers while enhancing overall sound quality.
Imported JAN5654 Tubes: Equipped with vintage JAN5654 tubes by default, delivering rich warmth, improved detail, transparency, and dynamic response—especially notable in vocal reproduction. Easily swap tubes via the pluggable socket to tailor the sound signature to your preference.
Built-in Headphone Amplifier: Featuring a classic headphone amp circuit with dual NE5532 op-amps, it effortlessly drives headphones from 32 to 300 ohms with pristine clarity.
Premium Circuit Design: Utilizes advanced components including TI TPS5430 power management and TL071 + JRC2068 phono preamp circuits, offering a first-class analog audio experience at an unbeatable value.
Compact & Elegant: Crafted with a solid aluminum knob and smooth multi-level gain control, housed in a sleek grey molded aluminum alloy shell accented by a red tube cover and vintage-style knob. Its compact size fits perfectly in any space while delivering large, dynamic, and sweet tube sound.
Technical Specification:
Audio input: MM phono / turntable / 3.5mm AUX
Audio output: stereo L/R RCA / 3.5mm headphone jack
Output level: 1.5V (input 0.775V)
Max output power of headphone jack: 150mW@32Ω
Matched headphone impedance: 32-300Ω
Input sensitivity: 0.775V
Frequency response: 20Hz-20KHz(±3dB) (AUX IN) / Standard RIAA (phono IN)
S/N ratio: ≥105dB
THD: 0.2%
Dimensions(W*D*H): 95*117*30mm / 3.74*4.61*1.18in (exclude tubes)
Package dimensions(W*D*H): 255*215*65mm / 10.04*8.46*2.56in
Net weight: 330g / 0.73lb
Package weight: 600g / 1.32lb