TOPPING L30II headphone line amplifier and preamplifier

TOPPING L30 II is a high performance line headphone amplifier supporting RCA input and output, equipped with 6.35mm headphone jack and gain select function.

Improved NFCA

The L30 II uses an updated NFCA (Nested Feedback Composite Amplifier) module. Compared to the L30, it delivers 2x the power output into a 300 ohm load. The new circuitry has an ultra-low noise of 0.3uV and a dynamic range of 144dB, as well as 0.00006% THD+N.

Sound quality is never a problem

With the help of NFCA, the L30 II has easily reached the top of the industry, and has almost perfect performance regardless of distortion, dynamic range and multi-tone testing.

Low distortion at high power

The L30II can maintain ultra-low distortion under high load power. With a load of 32 ohms and an output power of 2500 mW, THD+N is below 0.00008%; at a load of 300 ohms and an output power of 300 mW THD+N is below 0.00007%.

Three amplification options to meet different needs

The L30 ll has three gain options: -14dB, 0dB, 16.5dB. Improved gain settings can cover a wider range of needs to meet the needs of a variety of headphones from low-sensitivity full-size on-ears to high-sensitivity IEMs. With an extremely low noise level of 0.3 µV, even IEMs will not hear background noise.

• Dimensions: 10.0 cm × 13.5 cm × 3.2 cm
• Weight: 360 g
• Power supply: 15VAC/1A 50Hz/60Hz @DC base 5.5*2.5
• Gain: L/M/H
• Amplifier input: 1xRCA (L+R)
• Headphone amplifier output: 1 x 6.35mm headphone output jack
• Line output: 1xRCA (L+R)
• Indicator light: White

L30 II Headphone Amplifier Specifications

• THD+N @1kHz (A-wt): <0.00006% @Output=500mW(32Ω); <0.00005% @Output=80mW(300Ω)
• THD @20-20kHz 90kBW: <0.00008% @Output=500mW(32Ω); <0.00007% @Output=80mW(300Ω)
• SNR @MAX OUT 1kHz (A-wt): 144 dB
• Dynamic Range @1kHz (A-wt): 144dB
• Frequency response: 20Hz-40kHz(±0.05dB)
• Output level: 14Vpp @G=L; 31Vpp@G=M; 37Vpp@G=H
• Measured noise level AP (A-wt): <0.7uvrms g="H
• Actual noise level* (A-watt): <0.3uvrms g="H
• Channel Crosstalk @1kHz: -92dB
• Input sensitivity: 25Vrms @G=L; 11.2Vrms@G=M; 2.0Vrms@G=H
• Gain: -14.0dB @G=L; 0dB@G=M; 16.5dB@G=H
• Output impedance: <0.1Ω
• 3500mWx2 @16Ω THD+N<0.1%;2700mWx2 @32Ω THD+N<0.1%;2000mWx2 @64Ω THD+N<0.1%560mWx2 @300Ω THD+N<0.1%
• 3500mWx2 @16Ω THD+N<0.1%;2700mWx2 @32Ω THD+N<0.1%;2000mWx2 @64Ω THD+N<0.1%;560mWx2 @300Ω THD+N<0.1%
• Load Impedance: >8Ω

L30 II Preamplifier Specifications

• THD+N @1kHz (A-wt): <0.00006%; THD @20-20kHz 90kBW: <0.00007%.
• SNR @MAX OUT 1kHz (A-wt): 144 dB
• Dynamic Range @1kHz (A-wt): 144dB
• Frequency response: 20Hz-40kHz(±0.05dB)
• Output level: 14Vpp @G=L; 31Vpp@G=M; 37Vpp@G=H
• Measured noise level AP (A-wt): <0.7uvrms g="H
• Actual noise level* (A-weight): <0.3uvrms g="H
• Channel Crosstalk @1kHz: -92dB
• Input sensitivity: 25Vrms @G=L; 11.2Vrms@G=M; 2.0Vrms@G=H
• Gain: -14.0dB @G=L; 0dB@G=M; 16.5dB @G=H Output impedance: 20Ω