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Kompaktowy wzmacniacz słuchawkowy Topping L30, zaprojektowany jako uzupełnienie przetwornika cyfrowego-analogowego E30. Dzięki wysokiej efektywności 141 dB i niskiemu poziomu szumów 0.3uV jest dobrym partnerem dla szerokiej zakresu słuchawek, zarówno dokanałowych jak i nausznych. L30 oparty jest na jest na tym samym module NFCA (nested Feedback Composite Amplifier) co flagowy model A90. Podobnie ma hybrydowe sprężenie zwrotne napięcia i prądu z UHGF (Ultra High Gain Feedback). Jest w posiadaniu trzystopniowego poziomu Gaina -9,9/0/9,5 dB. Przedwzmacniacz Topping L30 na wyjściu liniowym działa jako przedwzmacniacz, wtedy na wyjściu dzięki modułowi NFCA ma impedancję 20 Ohm
Dane Techninczne:
Maksymalna moc wyjściowa: 3,5 W/16 Ohm, 0,28 W/300 Ohm
THD&N: < 0.00007%/500mW (32 Ohm)
Impedancja wyjścia słuchawkowego: mniejsze niż 0.1 Ohm
Crosstalk: 91 dB
Wymiary: 134 x 100 x 32 mm
Topping L30
Headphone Amplifier / Preamplifier Black
The Topping L30 is a headphone amplifier with preamplifier function that is compact, affordable and, above all, extremely powerful! It benefits from excellent measurements, allowing it to deliver a sound reproduction of incredible precision, richness and dynamics.
Ultra high performance NFCA modules
The L30 uses the same NFCA (Nested Feedback Composite Amplifier) modules as the Topping A90 flagship. The hybrid voltage/current feedback architecture combined with UHGF (Ultra High Gain Feedback) technology provides excellent AC and DC performance. The unit's high output level allows it to easily accompany low impedance headphones. The L30's ultra-low noise of 0.3µV gives it a considerable lead over the competition, as does its extremely high dynamic range of 141dB. It is therefore capable of delivering vivid sound reproduction with unrivalled clarity. During measurements, the high limits of the Audio Precision APX555B analyzer have even been reached!
Suitable for all types of headphones
With an output level of 26Vp-p, a power of 2x 3500mW and an output impedance of less than 0.1ohm, the L30 will have no problem fitting to all types of headphones. The L30 will work equally well with high impedance headphones that require a high power input, as well as with in-ear earphones with very high sensitivity.
Adjustable gain
In order to make the L30 compatible with the widest range of listening devices, the headphone amplifier features a gain selector switch. Three parameters are available: -9.9dB, 0dB and 9.5dB.
Preamplifier function
The NFCA modules of the L30 are not only capable of accompanying most headphones and earphones on the market, but also function as a preamplifier with incredible performance. In preamplifier mode, the output impedance is only 20Ω and therefore suitable for most devices.
| 1 | Output mode switch |
| 2 | Gain switch |
| 3 | Power indicator |
| 4 | Jack 6.35mm headphone output |
| 5 | Volume knob |
| 6 | Right channel analog RCA input |
| 7 | Left channel analog RCA input |
| 8 | Right channel analog RCA output |
| 9 | Left channel analog RCA output |
| 10 | Power input |
Topping L30 review by Audio Science Review
" The race toward perfection and beyond continues in headphone amplifiers at incredibly low prices. The L30 is the latest offering, firmly grabbing the top of the class and holding on to it. Its functionality is excellent and price is very reasonable. "
Technical characteristics
| Specifications | |
|---|---|
| Product type | Headphone amplifier |
| Inputs | Stereo RCA |
| Outputs | 1x Jack 6.35mm headphone output 1x Stereo RCA Pre-Out |
| Gain selection | -9.9dB 0dB +9.5dB |
| Headphone amplifier specifications | |
|---|---|
| THD+N @ 1kHz, A-Weighting | < 0.00007% @ Output = 500mW, 32Ω < 0.00006% @ Output = 80mW, 300Ω |
| THD+N @ 20Hz-20kHz, 90kBW | < 0.0001% @ Output = 500mW, 32Ω < 0.00009% @ Output = 80mW, 300Ω |
| Dynamic range (DNR) @ 1kHz, A-Weighting | 141dB |
| SNR @ Max output level, 1kHz, A-Weighting | 141dB |
| Frequency response | 20Hz - 40kHz (±0.05dB) |
| Measured noise level @ A-Weighting | < 0.7µVrms @ G=L < 0.7µVrms @ G=M < 0.9µVrms @ G=H |
| Actual noise level @ A-Weighting | < 0.3µVrms @ G=L < 0.3µVrms @ G=M < 0.7µVrms @ G=H |
| Output level | 26Vpp @ G=L 26Vpp @ G=M 26Vpp @ 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 9Vrms @ G=M 3Vrms @ G=H |
| Output impedance | < 0.1Ω |
| Max power | 2x 3500mW @ 16Ω THD+N < 0.1% 2x 2300mW @ 32Ω THD+N < 0.1% 2x 280mW @ 300Ω THD+N < 0.1% |
| Load impedance | > 8Ω |
| Preamplifier specifications | |
|---|---|
| THD+N @ 1kHz, A-Weighting | < 0.00006% |
| THD+N @ 20Hz-20kHz, 90kBW | < 0.00009% |
| Dynamic range (DNR) @ 1kHz, A-Weighting | 141dB |
| SNR @ Max output level, 1kHz, A-Weighting | 141dB |
| Frequency response | 20Hz - 40kHz (±0.05dB) |
| Measured noise level @ A-Weighting | < 0.7µVrms @ G=L < 0.7µVrms @ G=M < 0.9µVrms @ G=H |
| Measured actual noise @ A-Weighting | < 0.3µVrms @ G=L < 0.3µVrms @ G=M < 0.7µVrms @ G=H |
| Output level | 26Vpp @ G=L 26Vpp @ G=M 26Vpp @ 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 9Vrms @ G=M 3Vrms @ G=H |
| Output impedance | 20Ω |
| General | |
|---|---|
| Supply voltage | 15VAC (power supply included) |
| Dimensions | 10 x 13.4 x 3.2cm |
| Housing material | Aluminum |
| Color | Black |
| Package | 1x Topping L30 1x Power supply 1x Jack 6.35mm to Jack 3.5mm adapter |
RMS level
THD
FFT Spectrum
THD+N vs Measured Level
