FiiO AM3D, Power Amplifier: THX AAA Amp Module For FIIO X7, X7 II, Q5, Q5S AMP (AM 3D, AM3 D)

FiiO - AM3D AAA THX Amp Module for FiiO X7, X7 II, Q5, and Q5S


World's First THX Certified Amp Module

The AM3D is the world's first THX Certified standalone amp module, and also the first to contain the innovative THX AAA technology. THX AAA amplifiers, given the same power supply, have superior audio performance and output power than other competing amplifiers - allowing you to enjoy incredibly low-distortion, true audiophile-grade sound wherever and whenever.

Fully Balanced Amp with 2 THX AAA-78 Chips

The AM3D amp module is based around the THX AAA-78 amplifier, with both 3.5 mm single-ended and 4.4 mm balanced outputs some notable feature appear in the graphic below:

FiiO - AM3D AAA THX Amp Module for FiiO X7, X7 II, Q5, and Q5S - Audio46
Dual THX AAA-78 amp chips are used for a fully-balanced amplifier design.


THX's patented feed-forward error correction topology leads to extremely low distortion and crosstalk, for a more realistic and immersive listening experience.

FiiO - AM3D AAA THX Amp Module for FiiO X7, X7 II, Q5, and Q5S - Audio46

0.5% high precision thin film resistors | 8-stage amplification | 4-way independent power supply | 2-layer isolated PCB design

The other components of the amplifier around the THX AAA amp chip were carefully chose to not only achieve strong power output, but to also ensure an exceptionally clean sound.

Exquisite Craftsmanship and Design

The AM3D's shell is precisely machined by CNC and undergoes a strictly controlled color anodizing process - creating a seamless blend between amp module and the FiiO players's main body by minimizing any color differences.

AM3D vs AM3B

Under the same testing conditions, the AM3D has a higher signal-to-noise ratio, less crosstalk, lower distortion, and a lower noise floor compared to the AM3B.

FiiO - AM3D AAA THX Amp Module for FiiO X7, X7 II, Q5, and Q5S - Audio46
Give Your FiiO Compatible Products a New Burst of Life

Pair the AM3D with the FiiO X7, X7 Mark II, Q5, or Q5S and experience unrivaled sound.