Hybrid Vacuum Tube Stereo Amplifier Class AB Bluetooth Receiver w/ USB & VU Meter

Bring vintage tube warmth and modern HiFi versatility together with the Nobsound A6 Hybrid Tube Amplifier, a beautifully styled Class AB stereo integrated amp designed for music lovers, vinyl enthusiasts, desktop audio setups, bookshelf speakers, and immersive home listening systems.

Combining classic 6P15 and 6N1 vacuum tubes with modern transistor amplification, the A6 delivers rich analog character, smooth mids, spacious stereo imaging, and detailed musical dynamics that make everything from jazz and classical to rock, blues, vinyl playback, and streaming audio feel more alive and engaging.

Perfect for musicians, audiophiles, studio listening rooms, desktop HiFi systems, and vintage-inspired stereo setups, the A6 offers flexible connectivity with Bluetooth 5.3, Optical, Coaxial, RCA, and USB playback support for high-quality digital music sources and lossless audio formats.

The built-in USB player supports FLAC, WAV, APE, AAC, MP3, and WMA playback, making it easy to enjoy high-resolution music libraries directly from a USB drive without additional equipment.

With its Class AB amplification design, glowing vacuum tubes, responsive analog VU meter, and brushed aluminum chassis, the A6 captures the timeless aesthetic of classic stereo receivers while delivering modern reliability and clean powerful performance.

Ideal for:

• Bookshelf speaker systems
• Vinyl & turntable listening setups
• Desktop HiFi audio
• Jazz & classical music playback
• Tube audio enthusiasts
• Home office listening stations
• Gaming & TV audio upgrades
• Bedroom stereo systems
• Small studio monitoring setups
• Retro-inspired listening rooms

The integrated headphone output provides smooth tube-driven private listening, while PRE-OUT support allows easy connection to powered subwoofers or external amplifiers for expanded 2.1 or multi-channel systems.

Features

• Hybrid vacuum tube & transistor amplifier
• Class AB stereo amplification
• Bluetooth 5.3 wireless audio
• USB lossless music player
• Optical & coaxial digital inputs
• Dual RCA analog inputs
• Analog VU meter display
• Headphone listening output
• PRE-OUT for subwoofer connection
• Tone control adjustments
• Retro brushed aluminum styling
• Tube rolling compatible design

Tube Configuration

• 6P15 tubes
• 6N1 tubes

Compatible Tube Replacements

• 6CH6
• 12BY7
• EL180
• 6Н1П
• 6AQ8
• AA61
• ECC40
• ECC82

Technical Specifications Inputs

• Bluetooth 5.3
• USB (U-Disk)
• Optical
• Coaxial
• Dual RCA

Outputs

• Speaker Banana Jacks
• PRE-OUT
• 3.5mm Headphone Output

Output Power

• 25W + 25W @ 4Ω
• 18W + 18W @ 8Ω

Supported Audio Formats

• FLAC
• WAV
• APE
• MP3
• AAC
• WMA

Frequency Response

• 20Hz – 20kHz

Supported Speaker Impedance

• 4Ω – 8Ω

Headphone Output

• 100mW @ 32Ω

Included Accessories

• Nobsound A6 Amplifier
• Bluetooth Antenna
• User Manual