iBasso AMP14 Portable Amplifier Module with Korg NuTube technology, 4.4mm balanced phone output at 5.2Vrms and dedicated 4.4mm balanced line output at 1.8Vrms. It uses a JFET differential amplifier and true balanced volume control for clean signal delivery. The cathode input design reduces interference while drawing power efficiently from compatible player batteries.

About iBasso AMP14
The iBasso AMP14 brings a distinctive vacuum tube character to your listening sessions. The 6th generation Korg NuTube 6P1 acts as the voltage amplifier and creates an engaging sound full of rich overtones. This setup gives music a more natural tonality that many listeners find pleasing and immersive for long listening periods.
It offers practical output options that expand how you use the device. You get a 4.4mm balanced phone output at 5.2Vrms paired with a separate dedicated 4.4mm balanced line output at 1.8Vrms. The true balanced signal path keeps the audio clean and powerful whether you drive headphones directly or send the signal to an external amplifier.
Advanced processing elements ensure precise control over the audio. A JFET differential amplifier handles conversion to balanced L+, L-, R+, R- output while two JRC volume control chips manage a 4-channel true balanced volume adjustment. The signal then flows through a 4-channel balanced output opamp buffer stage for smooth delivery.
Power management receives careful attention in the design. Two high-performance DC-DC chips from Linear Technology supply four separate DC-DC power rails. The module draws from the dual independent analog battery of compatible players to maintain clean and stable operation.
Compatibility stays straightforward for users of flagship players. The AMP14 works seamlessly with iBasso DX300 and DX320 models. It also applies a cathode input approach that lowers impedance and cuts down on external signal interference for quieter backgrounds.
Specifications
| Specification | Value |
|---|---|
| Vacuum Tube | Korg NuTube 6P1 |
| Phone Output | 4.4mm balanced |
| Phone Output Voltage | 5.2Vrms |
| Line Output | 4.4mm balanced |
| Line Output Voltage | 1.8Vrms |
| Volume Control | 4-channel true balanced |
| Amplifier Stage | JFET differential |
| Output Buffer | 4-channel balanced |
| Power Supply Chips | Linear Technology DC-DC |
| Total Power Supplies | 4 |
| Cathode Input | Yes |
| Compatible Players | DX300, DX320 |
| Price | $279 |
Reviews
Listening through this amplifier module feels warm and alive. The tube character adds nice depth to vocals and instruments without losing detail. I use it daily with my portable player and enjoy the natural flow in every track.
Switching to this module transformed how my music sounds. The balanced outputs deliver strong clean power and the soundstage opens up beautifully. Every session brings fresh enjoyment especially with acoustic tracks.
The power and control from this module impress me during long listening. Background stays quiet and the output drives my headphones effortlessly. It gives a pleasant tube flavor that makes playlists more engaging.