• Optimized Tube Amplification: Powered by an isolated power section with metal shielding, effectively reducing interference for a cleaner and more stable audio signal. The tube operates at a boosted 180V, maximizing its performance for a rich, dynamic sound.
• 4-Way Audio Selector & Splitter: Supports up to 4 RCA inputs, allowing easy connection to CD players, DACs, streamers, and Blu-ray players etc. The input switch enables seamless comparison between multiple devices without constant replugging. Dual outputs support simultaneous output, allowing connection to two amplifiers or two active speaker sets.
• Vintage VU Meter and Built-in Tube: The elegant VU meter, paired with a glowing tube, brings a timeless vintage aesthetic. The adjustable internal RGB lighting further enhances the ambiance. Whether in a studio or a cozy listening space, it creates an immersive experience.
• Headphone Output & Tone Control: With an integrated headphone jack, it delivers up to 500mW at 32Ω, ensuring ample drive for a wide range of headphones. Additionally, the adjustable bass and treble controls allow for precise tonal shaping, letting you customize the sound to match different headphones and audio setups.
• Easy Op-amp and Tube Upgrades: Designed for effortless customization, the pluggable sockets allow users to easily swap out op-amps and tubes for enhanced flexibility. Upgrade to higher-end components to refine the sound quality and elevate your listening experience.

• Brand: Nobsound
• Model: TUBE-T5C
• Audio input: 4 groups of RCA
• Audio output: 2 groups of RCA / 3.5mm headphone jack
• Input sensitivity: 0.775V
• Rated output level: 2V
• Frequency response: 20Hz-20KHz (±0.8dB)
• THD+N: 0.06%
• SNR: ≥107dB
• Bass/treble range: ±6dB
• Headphone output power: 500mW/32Ω
• Matched headphone impedance: 16-600Ω
• Working voltage: DC 12V
• Dimensions (W*D*H): 152*92*85mm / 5.98*3.62*3.35in
• Package dimensions (W*D*H): 285*155*110mm / 11.22*6.10*4.33in
• Net weight: 827g / 1.82lb
• Package weight: 1.10kg / 2.42lb

User Manual of Douk Audio TUBE-T5C

Warm tips

• All outputs work at the same time. The volume/treble/bass are controlled simultaneously. 
• If the VU meter needle isn't moving noticeably, please turn up the bass and the master volume.
• 10-second warm-up required; audio delayed during tube activation.
• The TUBE-T5C with 1PC pluggable NE5532 op-amp, can be upgraded by dual op-amps like 2134/2604/5532/2068/muse02.
• Default one ECC83 tube, can be directly replaced by PSVANE 12AX7-S and Shuguang 12AX7B / 7025 / 12AX7 etc.
• High voltage inside, please turn the TUBE-T5C off first before replacing the op-amp and the tube, and avoid dropping anything inside.