Fully Balanced, Discrete Precision

Moving beyond conventional integrated-chip designs, the H400 MK2 adopts a fully balanced discrete-component architecture with symmetrical signal paths. This carefully engineered design provides greater flexibility in circuit implementation and supports precise, high-quality audio amplification.

Versatile Drive, Flexible Gain

Featuring Low, Mid, and High gain settings, the H400 MK2 adapts to a wide range of headphones, from sensitive IEMs to high-impedance over-ear models. Fine-tune the gain to match your headphones and enjoy a more flexible desktop listening experience.

High-End Components, Precise Amplification

Equipped with 14 OPA1612A op-amps in a parallel configuration, the H400 MK2 is designed to reduce circuit noise and enhance dynamic performance. Combined with ultra-low THD+N of just 0.00006%, it delivers clean signal amplification with exceptional precision.

Refined Design, Thoughtful Protection

Featuring a full-lamination IPS color display and an ultra-compact chassis, the H400 MK2 combines modern desktop aesthetics with practical functionality. Its aerospace-grade all-aluminum body is precision CNC-machined for structural rigidity, heat dissipation, and electromagnetic shielding, while built-in DC, over-voltage, and overload protection adds an extra layer of security.

Clean Power, Stable Performance

Built with a custom low-noise GaN power supply, the H400 MK2 combines high power efficiency with reduced switching noise and stable power delivery. Its carefully designed power system provides reliable support for demanding audio amplification.

Technical Details

Headphone outputs
4.4mm/XLR Balanced, 6.35mm unbalanced
Pre-outputs
Balanced, Unbalanced
Output Power (Balanced)
16Ω: 18Wx2
32Ω: 9Wx2
300Ω: 1100mWx2
600Ω: 550mWx2
Output Power (Unbalanced)
16Ω: 5Wx2
32Ω: 2.5Wx2
300Ω: 260mWx2
600Ω: 130mWx2
SNR
132dB
Dynamic Range
132dB
THD+N
-123dB, 0.00006% (1kHz, 32 Ω)
Input Impedance
47kΩ
AMP output Impedance
Near 0 Ω
Pre-output Impedance
Balanced: 44Ω
Pre-output Impedance
Unbalanced: 22Ω
Frequency Response
20Hz – 100kHz (–0.5dB)
Gain (Balanced)
Low(–5.5dB), Middle(6dB), High(19.6dB)
Gain (Unbalanced)
Low(–11.5dB), Middle(0dB), High(13.6dB)
Power consumption (EN60065)
<100W
Size
254×48×189mm (W×H×D)
Weight
2.2kg / 4.85lbs
Inside the Box
  • 1 x SMSL H400 MK2
  • User Manual

30-Day Return Policy

You may return any non-customized product that is still factory sealed, within 30 days upon receiving it. For items that are damaged, incorrect, or faulty upon delivery, Linsoul will assess the issue and provide a solution accordingly.

1 Year Warranty

The SMSL H400 MK2 Comes with a 1 year warranty on the AMP & DAC only. Warranty doesn't apply to the included accessories.

Processing Time

This product is in Pre-order period. Pre-orders are provided for items that have not reached us and will take some time to be shipped out.

Pre-order Period:

  • Expected to be available in early December.

Note:

  • No cancellation of orders once ordered.
  • All orders to be shipped out sequentially.

Recently Viewed Products