• Authentic Pure Tube Amplifier: Adopting 4*6P1 tubes for power amplification stage and 3*6N1 for voltage amplification and driver stages, DA7 delivers warm, natural sound with an expansive dynamic range, bringing an organic and immersive listening experience.
• Versatile Input Options: Equipped with dual RCA inputs, a USB port, and Bluetooth, the DA7 enables various audio sources such as phones, tablets, laptops, and more, and features a dedicated input switch knob for seamless switching.
• Fast Digital & Wireless Connectivity: The DA7 supports USB 3.0 for high-speed audio transmission and superior sound quality. Its dual-mode Bluetooth 5.3/5.0 ensures fast pairing, stable connections, and high-resolution wireless audio with lossless clarity.
• Dual VU Meters for Real-Time Monitoring: Featuring two analog VU meters that respond dynamically to the power amplification signal. The warm, rhythmic needle movement adds a classic touch while providing real-time audio monitoring.
• High-Quality Construction: Featuring an imported wideband EI output transformer, gold-plated pure copper connectors, and a durable steel mesh protective cover that enhances tube safety while ensuring efficient heat dissipation.

• Brand: Nobsound
• Model: DA7
• Audio input: Bluetooth / Stereo RCA / USB
• Audio output: Banana speaker jacks / Stereo RCA
• Tube model: 6P1*4+6N1*3
• Rated output power: 12W×2 (4Ω); 8W×2 (8Ω)
• Frequency response: 10Hz-40KHz (-3dB)
• THD: 1% (1KHz)
• SNR: 85dB
• Input sensitivity: 300mV
• Input impedance: 100KΩ
• Output impedance: 4Ω / 8Ω
• Power consumption: 150W
• Max storage of U-disk: 128G
• Supported file system of U-disk: FAT32 / ExFAT
• Supported formats of U-disk: MP3 / WMA / APE / FLAC / AAC / WAV
• Input voltage: AC 220V IN
• Dimensions (W*D*H): 318*305*155mm / 12.52*12.01*6.10in
• Package dimensions (W*D*H): 410*350*220mm / 16.14*13.78*8.66in
• Net weight: 7.6kg / 16.75lb
• Package weight: 8.5kg / 18.74lb

User Manual & Driver of Nobsound DA7