Topping L30 II Headphone Amplifier

Description

Topping L30 II Headphone Amplifier

The Topping L30 II Headphone Amplifier has a totally redesigned NFCA amplifier, the L30 II makes significant improvements over its predecessor: better THD+N level, better dynamic range, double the output power, wider gain spread, and increased output voltage.

Features

• NFCA module
• 3500mW x2 @16Ω / 560mW x2 @300Ω
• 3 gain settings
• <0.00006% THD+N
• 133dB DNR
• <0.3uVrms Noise
• <0.1Ω output impedance

Improved NFCA
L30 II uses redesigned NFCA (Nested Feedback Composite Amplifier) module. It provides 2x output power at 300Ω load compared to L30. The new circuit has 0.3uV ultra low noise and 144dB dynamic range as well as 0.00006% THD+N.

Sound quality is never a problem
With the help of NFCA, L30 II easily reach the top of the industry,and it has almost perfect performance regardless of distortion, dynamic range,and multi-tone testing.

Compatible with all kinds of headphones
With high output voltage, high current, and low output impedance, the L30 II can power any kind of headphone. It easily drives power-hungry planar magnetics, highly-sensitive IEMs, and everything in between.

High power, low distortion
The L30 II manages ultra-low distortion beneath a high power load. For example, under a 32Ω load and 2500mW of output, the THD+N is lower than 0.00008%; under a 300Ω load and 300mW of output, the THD+N is lower than 0.00007%.

Three gain settings to suit different needs
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 different headphones from low-sensitivity full-sized over-ears to high-sensitivity IEMs.With the help of extremely low noise 0.3uV,even IEMs will not hear any background noise.

Specifications

Headphone amplifier specs

• THD+N @1kHz (A-wt)
  • <0.00006% @500mW (32Ω)
  • <0.00005% @80mW (300Ω)
• THD @ 20-20kHz 90kBW
  • <0.00008% @500mW (32Ω)
  • <0.00007% @80mW (300Ω)
• SNR @MAX OUT 1kHz (A-wt): 144dB
• Dynamic range @1kHz (A-wt): 144dB
• Frequency response: 20Hz – 40kHz (±0.05dB)
• Output level
  • Low gain: 14Vpp
  • Medium gain: 31Vpp
  • High gain: 37Vpp
• AP measured noise level (A-wt)
  • Low gain: <0.7uVrms
  • Medium gain: <0.7uVrms
  • High gain: <1.5u Vrms
• Actual noise level (A-wt)
  • Low gain: <0.3 uVrms
  • Medium gain: <0.3 uVrms
  • High gain: <1.4 uVrms
• Channel crosstalk @1kHz: -92dB
• Input sensitivity
  • Low gain: 25 Vrms
  • Medium gain: 11.2 Vrms
  • High gain: 2.0Vrms
• Gain
  • Low gain: -14dB
  • Medium gain: 0dB
  • High gain: 16.5dB
• Output impedance: <0.1Ω
• Output power
  • 3500mW x2 @16Ω THD+N <0.1%
  • 2700mW x2 @32Ω THD+N <0.1%
  • 2000mW x2 @64 THD+N<0.1%
  • 560mW x2 @300Ω THD+N<0.1%
• Load impedance: >8Ω

Pre-amplifier specs

• THD+N @1kHz (A-wt): <0.00006%
• THD @20-20kHz 90kBW: <0.00007%
• SNR @MAX OUT 1kHz (A-wt): 144dB
• Dynamic range @1kHz (A-wt): 144dB
• Frequency response: 20Hz – 40kHz (±0.05dB)
• Output level
  • Low gain: 14Vpp
  • Medium gain: 31Vpp
  • High gain: 37Vpp
• AP measured noise level (A-wt)
  • Low gain: <0.7 uVrms
  • Medium gain: <0.7 uVrms
  • High gain: <1.5 uVrms
• Actual noise level (A-wt)
  • <0.3 uVrms
  • <0.3 uVrms
  • <1.4 uVrms
• Channel crosstalk @1kHz: -92dB
• Input sensitivity
  • Low gain: 25 Vrms
  • Medium gain: 11.2 Vrms
  • High gain: 2.0 Vrms
• Gain
  • Low gain: -14dB
  • Medium gain: 0dB
  • High gain: 16.5dB
• Output impedance: 20Ω