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ZuperDAC Ultra
ZuperDAC Ultra
ZuperDAC Ultra
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Ztella Tube
The Soul of a Tube Amp,
The Freedom of a Cable
Imagine the legendary warmth of a classic tube amplifier, the kind that brings a rich, harmonic depth to every note. Now, imagine that same captivating sound, freed from a giant wooden cabinet and living in a cable that fits in your pocket.
Introducing Ztella Tube, the world's first truly portable USB-DAC with a genuine vacuum tube. We've achieved the impossible by housing a special low-power tube within a sleek, durable cable, delivering that coveted "tube sound" to your headphones wherever you go.
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Tiny Tube, Big Vibes
Hear the Warmth, Feel the Difference
The Tube magic, at its heart beats a genuine pair of JAN6418 tubes, delivering the rich, warm, and emotionally resonant sound that audiophiles cherish. It brings depth and character to every genre of music, transforming your listening into an engaging experience.
Our hybrid amplifier architecture carefully blends the lush, soulful character of the tube pre-amp stage with a clean, powerful solid-state output. This gives you the best of both worlds: the musicality of vintage analog and the precision and drive of modern technology.
You can tailor your sound on the fly. With a simple button press, switch between Tube mode for warm and rich tones or Bypass mode for the pure and uncolored output of the high-performance DAC.​
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Portable Audio Redefined
The Impossible, Made Portable
The high-performance ESS Sabre DAC ensures a pristine, detailed signal from your source, free from the noise and compression of standard headphone jacks. Supporting PCM 768kHz and DSD 22.5MHz with a built-in MQA renderer, Ztella Tube unlocks every detail of your high-resolution audio files and streams, revealing studio-quality sound you've never heard before.
Elevate Every Note
Music, How It's Meant to Be Heard
Plug & play simplicity, no drivers, no hassle. Just plug Ztella Tube directly into your iPhone, Android, Mac, or PC and enjoy an instant audio upgrade at your desk, on the go, or relaxing at home. Hear your music come alive with enhanced depth, smoother highs, and a rich, engaging soundstage.
Perfect for the daily commute, a critical listening session at home, or as the centerpiece of your desktop audio setup. Ztella Tube isn't just an upgrade, it's a revolution in how you connect with your music.
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The Detail You Demand,
The Warmth You Love
Ztella Tube isn't just an accessory, it's a revolution in personal audio. We've engineered the impossible, packing a high-voltage tube amplifier circuit and a flagship-grade DAC into a robust, cable-integrated form factor. It proves that greatness doesn't require giant components, just groundbreaking ideas.
Ready to transform your music? Listen and feel the difference. Discover why Ztella Tube is the most personal and profound way to experience your music collection.
Your Daily Escape, Amplified
Plug In, Bliss Out
Functions and Specifications
​Physical Interface
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USB-C Data input to your PC/Mac, Smartphone or Streamer
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3.5mm single-ended headphone output (L/R/GND)
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USB 2.0 High Speed and USB Audio Class 2 standard
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Audio Format
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High Definition Audio PCM sampling frequency up to 768kHz (16x CD)
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High Definition Audio DSD sampling frequency up to 22.5MHz (8x SACD, aka DSD512)
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MQA (Master Quality Authenticated) Certified Renderer (2nd unfold)
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Bit-Perfect Hi-Res Lossloss music playback
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OS Support
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Plug and play for Android, iOS, macOS and Windows 10/11
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Output Power​​
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52mW+52mW @ 32-ohm loading
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Audio Performance​​
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Superior sound quality with ESS Sabre 9281ACPRO DAC technology
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Dual JAN6418 vacuum tube at Tube mode
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SNR @ 125dB @ 32-ohm loading
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THD+N @ 0.0006% @ 32-ohm loading
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OS Support​
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Plug and play for Android, iOS, macOS and Windows 10/11
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Operation​
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Side button to toggle between Tube mode or Bypass mode​
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LED Indicators​​
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Play status LED indicator (Blue for idle or SD audio <= 48kHz, Red for HD audio > 48kHz, Magenta for MQA content for MQA version only)​
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ID Design
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Matte black aluminum chassis
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Window to show the JAN6418 Tubes
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Measured at only 61mm x 21mm x 12mm (dongle portion), total length 140mm
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Weight at only 24g
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