Since SU-9 has been available, many users turn to looking forward to the S.M.S.L SH-9. We got some news from S.M.S.L, SH-9 is a powerful desktop headphone amplifier that supports unbalanced and balanced inputs and outputs. it will be priced at US $289.99, and the realise date is not determined yet.
This high-performance AMP features 2 output ports with a fully balanced output with a 4-Pin XLR and an unbalanced 6.35mm output port. It has enough output power to drive the head-phones that are commonly used in the market. In order to fit the small earbuds to the large headphones, it has been specially designed with 2 types of gain switch(High/Low).
SH-9 has the particularity of integrating THX Achromatic Audio Amplifier technology (THX AAA™) patent technology, delivering an uncompromising, ultimate headphone listening experience, and incredibly accurate sound at very low noise and distortion levels. THXAA-888 allows the amplifier to reach its maximum output power and sound pressure level without the distortion of the product typically associated with increased output levels of conventional amplifiers.
It includes a 1.9 inch color LCD display, you can view the input channels, gain settings and volume on the display clearly and intuitively. You can control and operate menu with the function knob, there are 5 pages of settings in this menu-- INPUT, GAIN, VOL MODE, BRIGHTNESS and VERSION. It adopts relay-controlled volume,the ultimate solution for analog audio. 
Specs:
Outputs: Balanced x1, Unbalanced x1
Output Power: 6W x 2 (16 Ω)
3W x 2 (32 Ω)
440mW x 2 (300 Ω)
220mW x 2 (600 Ω)
SNR: 137dB, A-Weighted
Output Noise: 1.9uV, A-Weighted
THD+N: -123dB, 0.00006% (A-Weighted)
THD+N: -117dB, 0.00013% (20-20kHz , 32 Ω, -3dB)
THD: -125dB, 0.00006% (1 kHz, 16 Ω, -3dB)
Input Impedance: 47kΩ
Output Impedance: Near 0 Ω
Frequency Response: 0.1Hz - 500kHz(-3dB)
Gain: Low(+0dB), High(+10dB)
Power supply voltage/frequency: AC100-240V, 50-60 Hz
Power consumption(EN60065): 24 W
Power consumption in standby mode:<0.1W
Size: 187.5x154x40(mm)
Packing size: 282x232x79(mm)
Weight: 790g
Admirm posted the review of SH-9 on ASR, you could just click here.
SH-9 review video from Joshua Valour on Youtube channel:
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