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Balanced Headphone Amplifier Preamplifier NFCA Black
The Topping L50 is a desktop headphone amplifier with an architecture optimized for incredible sound performance. It features a new generation NFCA circuit, based on the one used in the excellent A30 Pro. Versatile, it has a good power reserve and offers a gain control to adapt to all types of headphones.
The L50's NFCA circuitry allows it to develop considerable power, twice that of the L30 at 300Ω impedance. This design also achieves a very low noise level of only 0.3µV, a dynamic range of 145dB and a THD+N of 0.00006%.
The Topping L50 has both single-ended and balanced connectors to adapt to your listening equipment. It offers single-ended RCA and balanced 6.35mm TRS jacks as inputs. In the same way, at the output, we find a balanced XLR 4 poles and a single-ended 6.35mm jack.
When the L50 is switched off, the input signal goes directly to the RCA and TRS outputs, without amplification. It can thus work with active speakers, if the DAC has a preamplification function.
| Specifications | |
|---|---|
| Product type | Headphone amplifier |
| Inputs | 1x Balanced stereo Jack 6.35mm TRS 1x Single-ended stereo RCA |
| Outputs | 1x Balanced XLR 4 poles headphone output 1x Single-ended Jack 6.35mm headphone output 1x Balanced stereo Jack 6.35mm TRS 1x Single-ended stereo RCA |
| Measurements | ||
|---|---|---|
| Single-ended | Balanced | |
| THD+N @ 1kHz, A-Weighting | < 0.00006% @ 780mW, 32Ω | < 0.00006% @ 780mW, 32Ω |
| < 0.00006% @ 333mW, 300Ω | < 0.00006% @ 333mW, 300Ω | |
| THD @ 20Hz-20kHz, 90kBW | < 0.00008% @ 780mW, 32Ω | < 0.0001% @ 780mW, 32Ω |
| < 0.00008% @ 76mW, 300Ω | < 0.0001% @ 76mW, 300Ω | |
| SNR @ Max Out, 1kHz, A-Weighting | 145dB | 140dB |
| SNR @ 50mV, 1kHz | 104dB | 104dB |
| Dynamic range @ 1kHz, A-Weighting | 145dB | 140dB |
| Frequency response | 20Hz - 40kHz (±0.05dB) | 20Hz - 40kHz (±0.1dB) |
| Output level | 35Vpp @ G=L | 6.6Vpp @ G=L |
| 35Vpp @ G=M | 35Vpp @ G=M | |
| 37Vpp @ G=H | 37Vpp @ G=H | |
| Measured noise level @ A-Weighting | < 0.7µVrms @ G=L | < 0.7µVrms @ G=L |
| < 0.7µVrms @ G=M | < 0.7µVrms @ G=M | |
| < 1.2µVrms @ G=H | < 1.2µVrms @ G=H | |
| Crosstalk @ 1kHz | -119dB | -113dB |
| Input sensitivity | 60Vrms @ G=L | 12.7Vrms @ G=L |
| 12Vrms @ G=M | 12Vrms @ G=M | |
| 2.7Vrms @ G=H | 2.7Vrms @ G=H | |
| Gain | -14.3dB @ G=L | -14.5dB @ G=L |
| -0.1dB @ G=M | -0.3dB @ G=M | |
| 13.9dB @ G=H | 13.7dB @ G=H | |
| Output impedance | < 0.1Ω | < 0.1Ω |
| Output power | 2x 3500mW @ 16Ω, THD+N < 0.1% | |
| 2x 2800mW @ 32Ω, THD+N < 0.1% | ||
| 2x 2000mW @ 64Ω, THD+N < 0.1% | ||
| 2x 540mW @ 300Ω, THD+N < 0.1% | ||
| 2x 290mW @ 600Ω, THD+N < 0.1% | ||
| Adapter impedance | > 8Ω | |
| General | |
|---|---|
| Power supply | 15V AC via Jack DC (included) |
| Dimensions | 129 x 166 x 41mm |
| Color | Black |
| Package | 1x Topping L50 Black 1x Jack 6.35mm to Jack 3.5mm adapter 1x Power Supply 15V AC |
| Input | RCA |
| Input | Jack 6.35mm |
| Output | XLR |
| Output | RCA |
| Output | Jack 6.35mm |
| Color | Black |
| Class | N/A |
| Remote Control | No |
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