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S.M.S.L H400 Hi-Res Headphone Amplifier Hi-End Preamp Design High Power Output 15W/16Ω 7.5W/32Ω Hi-Fi Audio Fully Balanced 3 Gears Gain Control 4.4mm Balanced/XLR 4Pin/ 6.35mm Unbalanced (Black)

4.6 (2) Write Review
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$510.00

$ 99 .00 $99.00

In Stock

1.Color:Silver


  • High Power Output and HI-END preamp design：Output power up to 15W at 16Ω and 7.5W at 32Ω，Preamp output function can be used as Hi-End preamp.
  • High, medium and low gain control can be switched：Unbalanced interface：Low -11.8dB， Medium 0dB，High 14.4dB；Balanced interface：Low -5.8dB，Medium 6dB，High 20.4dB.
  • Fully balanced discrete component design, Ultra-high power output, Use of electronic relays to control volume, eliminating channel deviations, Built-in high efficiency and low noise power supply system.
  • Beautiful shining quality aluminum housing，Fully laminated color lPS display using tempered glass, equipped with full-function remote control, good hand feeling, better quality, support full-function remote control.
  • 12 months warranty, you can return the item or replace a new one if you have any problems.


Product Description

H400-B---1
H400-B---2
H400-B---3
H400-B---4
H400-B---5

1

Built-in high efficiency and low noise power supply system

1

Use of electronic relays to control volume,eliminating channel deviations

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Fully balanced discrete component design

Ultra-high power output

1

Wireless control Convenient operation

Equipped with full-function remote control, good hand feeling, better quality, support full-function remote control

Specifications

Input Method Balanced, unbalanced
Earphone Output Method 4.4mm Balanced, XLR Balanced, 6.35mm RCA
Preamp Output Method Balanced, unbalanced
OUTPUT POWER 16Ω : 15Wx 2 , 32Ω : 7.5Wx 2 , 300Ω : 1000mWx2 , 600Ω : 500mWx2
SNR 133dB
Dynamic range 133dB
THD+N -123dB,0.00006%(1kHz,32 Ω)
Input Impedance 47kΩ
Headphone output impedance Almost close to 0 Ω
Preamp Output impedance Balanced : 44Ω , Unbalanced : 22Ω
Frequency Response 20Hz-100kHz(-0.5dB)
Gain Balanced Low(-5.8dB) , Medium(6dB) , High(20.4dB)
Gain Unbalanced Low(-11.8dB) , Medium(0dB) , High(14.4dB)
Consumption(EN60065) <50W
Standby Power Consumption <0.5W

Michael
Reviewed in the United States on March 29, 2025
Bought these somewhere else and they pair nicely with the SMSL d400 pro dac. I use these with he560 v4, Ayra stealth, hd800s, LCD2C and they all sound nice on them.
Fred
Reviewed in the United States on January 28, 2025
Solid build quality. The was a huge improvement from the built-in headphone amp in my Marantz CR-612. I'm running a WiiM mini and CD player through a Topping E70 velvet into the SMSL H400 Headphone Amplifier. I have couple of headphones and IEMs. I feel like it's the 1st time I'm really hearing what they are capable of. Through out the entire frequency range everything is well controlled nothing is bloated or peaky. Good amount of power that leaves plenty of headroom. I'm using between 45-65% of volume in the headphone and IEMs respective gain setting. Separation and sound stage are well defined and well layered no matter which headphone or IEMs I'm using. I'm enjoying this next level of sound experience.