The SP200 was just recently released (October 29th, 2019).
Only 10% off so this comes short of a Black Friday deal, but I thought to share for those who are interested.
Currently ~$420 direct from China (including 10% GST).
The SMSL SP200 @ $382 Delivered is being compared to the MassDrop THX AAA 789 Linear Amplifier @ US$400(AU$600), I think this comes out on top as a bargain (and the SP200 is fully-balanced on the Balanced output according to nerds who broke-down the circuit-board).
Here is a comparison of “SMSL SP200 vs Massdrop THX-789 vs Benchmark HPA4” for those interested.
SMSL SP200 Headphone Amplifier THX AAA Balanced Headphone Amp
The SP200 THX AAA allows the amplifier to reach its maximum output power and sound pressure level (SPL) without the distortion typically associated with increased output levels of conventional amplifiers. The output impedance is as low as 0Ω.
The SP200 has a balanced stereo headphone output,a balanced stereo line input,comes with high precision resistors for temperature stability, and a high-efficiency ultra-low noise power supply.
Inputs: Balanced x 1, Unbalanced x 1
Outputs: Balanced x 1, Unbalanced x 1
Output Power:
6W x 2 (16ohm)
3W x 2 (32ohm)
440mW x 2 (300ohm)
220mW x 2 (600ohm)
SNR: 130dB, A-Weighted
Output Noise: 2.8uV, A-Weighted
THD+N: -122dB, 0.00007% (1kHz, 32ohm)
THD+N: -117dB, 0.00013% (20 - 20kHz, 32ohm, -3dB)
THD: -125dB, 0.00006% (1kHz, 16ohm, -3dB)
Output Impedance: Near 0ohm
Frequency Response: 0.1Hz - 500kHz(-3dB)
Gain: Low(+6dB), High(+18dB)
Power Supply Voltage/Frequency: AC100-240V, 50-60 Hz
Power Consumption (EN60065): 24W
Power Consumption in Standby Mode: < 0.1W
Size: 160 x 149 x 73 mm
Weight: 772g
Shenzhen Audio has it for US$261/~AU$386 and I kinda like their free express shipping. I bought a Topping D70 a few months ago and got it in a week.
That said, I almost bought this SMSL SP200 on 11/11 (SA/AliExpress were selling it for $250ish) to pit it against the Massdrop 789 but decided against it as there were emerging issues with the volume pot on these production SMSL SP200 units. They used a different pot to the one supplied to Amir for review.