iBasso AMP18 Balanced Amplifier Card with dual 4.4mm outputs, 80-transistor matrix, and up to 1740mW power at 32 ohms. This discrete card delivers natural warm sound with excellent current delivery for both demanding headphones and low-impedance earphones. It enhances musicality and staging while keeping distortion low across the full frequency range.
About iBasso AMP18
The iBasso AMP18 brings a refined two-stage architecture built around an 80-transistor matrix. This symmetrical design uses 40 dual transistors to deliver clean current and minimize distortion so your music flows with natural ease. Listeners enjoy a more engaging experience because the card handles everything from sensitive IEMs to power-hungry headphones without strain.
It fits perfectly into the iBasso DX300, DX320, and DX340 players and offers dual 4.4mm balanced connections for both headphone and line output. You gain flexible setup options that let you drive full-size cans or feed an external amplifier while keeping signal integrity high. The low 1.2 ohm output impedance ensures accurate control over any load you attach.
Power output climbs to 1740 milliwatts per channel at 32 ohms with a 12 volt DC supply and still delivers a solid 1170 milliwatts on battery alone. This generous headroom gives you confident drive for demanding headphones and preserves dynamics even at higher volumes. Your favorite tracks retain punch and scale without compression or fatigue.
Technical performance stays impressive across the board with a 123 decibel dynamic range, 122 decibel signal-to-noise ratio on the headphone output, and frequency response that stretches from 10 hertz to 40 kilohertz within tight tolerance. Low THD plus N values across different loads keep the sound transparent and free of unwanted artifacts so every detail stays clear.
Overall the AMP18 shapes a mature balanced sound full of warmth and note weight together with a wider stage and textured bass. It blends musicality and resolution in a way that makes long listening sessions rewarding and immersive. The card turns your digital audio player into a versatile analog-like source that feels alive and enjoyable.
Specifications
| Specification | Value |
|---|---|
| Compatibility | DX300, DX320, DX340 |
| Outputs | Dual 4.4mm balanced PO and LO |
| Amplification | Two-stage 80-transistor matrix |
| Max power (12V DC) | 1740mW + 1740mW @ 32 ohms |
| Max power (battery) | 1170mW + 1170mW @ 32 ohms |
| THD+N (PO no load) | -114 dB |
| THD+N (PO 32 ohms) | -93 dB |
| Dynamic range | 123 dB |
| SNR (PO) | 122 dB |
| SNR (LO) | 123 dB |
| Crosstalk (PO) | 122 dB |
| Frequency response | 10Hz-40kHz ±0.9dB |
| Output impedance | 1.2 ohms |
| Price | $279 |
Reviews
Finally found the perfect match for my full-size headphones. The sound feels alive with nice weight in the notes and a spacious stage that pulls me deeper into the music. Bass has great texture without ever becoming bloated.
Swapped in this card and immediately noticed smoother vocals and better separation between instruments. It drives my planar headphones with ease and keeps everything controlled even at higher volumes. Really enjoy the natural tone during long sessions.
Low impedance earphones sound wonderfully detailed now with zero harshness. The extra power makes dynamics pop in a very musical way. Every track feels more engaging and I keep reaching for different genres just to hear how they translate.
