Sell Topping L30 Ultra Low Noise Cost effective Headphone Amplifier with superior NFCA Modules + UHGF Technology best price

Topping L30 - Ultra Low Noise Cost-effective Headphone Amplifier with NFCA Modules + UHGF Technology The TOPPING L30 is a new product with Ultra-High Performance NFCA modules,uses the same NFCA (Nested Feedback Composite Amplifier)module from flagship A90. Voltage Current hybrid feedback architecture along with UHGF (Ultra High Gain Feedback) technology provides excellent DC and AC performance. High output current drive capability allows the amp driving low impedance headphones with ease. Ultra-low noise of 0.3uV is miles ahead of the competition,giving an absurdly high dynamic range of 141dB and no audible noise and darkest background for the most sensitive IEMs. 3 step gain settings: L30 is equipped with three gain settings of -9.9dB/0dB/9.5dB.Wide range of gain settings and the 0.3uVrms ultra-low noise makes L30 easily adapt to all types of headphones from extremely sensitive IEMs to most power demanding full-sized over-ears. Also an excellent preamp:The NFCA modules of L30 are not only able to drive the headphones but also apply to be a preamplifier with the same ultra-high performance. When it is in preamp mode,output impedance is as low as 20ohm, which is widely suitable for various devices. SPECIFICATIONS L30 Headphone Amplifier Specs THD+N @ 1kHz A-wt: <0.00007% @ Output = 500mW (32ohms), <0.000006% @ Output = 80mW (300ohms) THD @20-20kHz 90kBW: <0.0001% @ Output = 500mW (32ohms), <0.000009% @ Output = 80mW (300ohms) SNR @ MAX OUT 1kHz A-wt: 141dB Dynamic Range @ 1kHz A-wt: 141dB Frequency Response: 20Hz-40kHz (±0.05dB) Output Level: 26Vpp @ G=L, 26Vpp @ G=M, 26Vpp @ G=H AP measured noise level @A-wt: <0.7uVrms @ G=L, <0.7uVrms @ G=M, <0.6uVrms @ G=H Actual noise level* @A-wt: <0.3uVrms @ G=L, <0.3uVrms @ G=M, <0.7uVrms @ G=H Channel Crosstalk @ 1kHz: -91dB IMD CCIF @ (18kHz+19kHz): -116dB IMD SMPTE @ (60Hz+7kHz): -110dB @ SMPTE4:1, -115dB @SMPTE1:1 Input Sensitivity: 25Vrms @ G=L, 9.0Vrms @ G=M, 3.0Vrms @ G=H Gain: -9.9dB @ G=L, 0dB @ G=M, 9.5dB @ G=H Output Impedance: <0.1ohms Output Power: 3500mW x2 @16ohms THD+N <0.1%, 2300mW x2 @32ohms THD+N <0.1%, 280mW x2 @300ohms THD+N <0.1% Load Impedance: >8ohms Contents list: L30 x1 AC adapter x1 6.35mm to 3.5mm adaptor x1 User manual x1 Warranty card x1