Overview:
With a wide applied range and practicability, this preamplifier can fit the majority of active speakers and power amplifiers in the market. The replaceable 6K4 vacuum tubes design can optimize the circuit. The audio part and the power part are completely separated, which minimizes the interference to the sound. The timbre is soft and beautiful, sweet and warm, and with powerful bass, penetrating treble. With treble and bass adjustment, single power supply, it's small and portable, brings you much fun and convenience. Using high-quality aluminum alloy housing with gold-plated connectors, it's durable and high-performance.

Specifications:
Brand Name: FX-AUDIO
Model Number: TUBE-03
Tube Model: 6K4
Frequency Response: ±1.5(20Hz-20KHz)
Audio Input Interface: RCA
Audio Output Interface: RCA
RCA Output: 0.9Vrms
SNR: 100dB
THD: 0.03%
Treble Adjustable Range: ±6dB
Bass Adjustable Range: ±10dB
Input Voltage: AC 100-240V, 50/60Hz; DC 12V/1A
Color: Black, Silver (Optional)
Main Item Size: approx. 12 * 9.8 * 3.3cm / 4.72 * 3.85 * 1.29in
Main Item Weight: approx. 318g / 11.21oz
Package Size: approx.  22 * 21 * 7cm / 8.66 * 8.26 * 2.75in
Package Weight: approx. 566g / 19.96oz

Package List:
1 * Preamplifier
1 * Power Adapter
1 * User Manual (English & Chinese)