Topping A90 Headphone Amplifier

Name: Topping A90 Headphone Amplifier
Brand: Topping
SKU: topping-a90-headphone-amplifier
Price: 425 USD
Availability: OutOfStock
Rating: 5 (2 reviews)

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Product Description

At the top of Topping’s highly regarded A-series, the A90 is a headphone amplifier with few rivals. Capable of functioning as both a headphone amp and a preamp, this flagship unit is outfitted with NFCA (Nested Feedback Composite Amplifier) modules, which work together with ultra-high-gain feedback technology for impressive AC and DC control Read More

Specs

Topping A90 (Headphone Amp) – Single-Ended Input / Output

THD + N at 1 kHz (A-weighted): < 0.00007% at 500 mW (32 ohms) / < 0.00006% at 80 mW (300 ohms)
THD at 20 Hz – 20 kHz, 90kBW: < 0.0004% at 500 mW (32 ohms) / < 0.0001% at 80 mW (300 ohms)
SNR at maximum output 1 kHz (A-weighted): 141 dB
Dynamic range at 1 kHz (A-weighted): 141 dB
Frequency response: 20 Hz – 40 kHz (± 0.05 dB)
Output level: 9 Vpp at G = L, 25 Vpp at G = M, 25 Vpp at G = H
AP measured noise level (A-weighted): < 0.7 uVrms at G = L, < 0.7 uVrms at G = M, < 0.9 uVrms at G = H
Actual noise level (A-weighted):< 0.2 uVrms at G = L, < 0.2 uVrms at G = M, < 0.6 uVrms at G = H
Channel crosstalk at 1 kHz: -106 dB
IMD CCIF at 18 kHz + 19 kHz: -118 dB
IMD SMPTE at 60 Hz + 7 kHz: -110 dB at SMPTE 4:1 / -115 dB at SMPTE 1:1
Input sensitivity: < 9.5 Vrms at G = L, < 8.8 Vrms at G = M, < 2.9 uVrms at G = H
Gain: -9.5 dB at G = L, 0 dB at G = M, 9.5 dB at G = H
Output impedance: < 0.1 ohms
Output power: 3,300 mW x 2 at 16 ohms (THD + N: < 0.1 %), 2,000 mW x 2 at 32 ohms (THD + N: < 0.1 %), 250 mW x 2 at 300 ohms (THD + N: < 0.1 %), 125 mW x 2 at 600 ohms (THD + N: < 0.1 %)
Load impedance: > 8 ohms

Topping A90 (Headphone Amp) – Balanced Input / Single-Ended Output

THD + N at 1 kHz (A-weighted): < 0.00009% at 500 mW (32 ohms) / < 0.00006% at 80 mW (300 ohms)
THD at 20 Hz – 20 kHz, 90kBW: < 0.0004% at 500 mW (32 ohms) / < 0.0001% at 80 mW (300 ohms)
SNR at maximum output 1 kHz (A-weighted): 137 dB
Dynamic range at 1 kHz (A-weighted): 137 dB
Frequency response: 20 Hz – 40 kHz (± 0.01 dB)
Output level: 9 Vpp at G = L, 25 Vpp at G = M, 25 Vpp at G = H
AP measured noise level (A-weighted): < 0.7 uVrms at G = L, < 0.7 uVrms at G = M, < 0.9 uVrms at G = H
Actual noise level (A-weighted):< 0.2 uVrms at G = L, < 0.2 uVrms at G = M, < 0.6 uVrms at G = H
Channel crosstalk at 1 kHz: -102 dB
IMD CCIF at 18 kHz + 19 kHz: -118 dB
IMD SMPTE at 60 Hz + 7 kHz: -110 dB at SMPTE 4:1 / -115 dB at SMPTE 1:1
Input sensitivity: < 9.5 Vrms at G = L, < 8.8 Vrms at G = M, < 2.9 uVrms at G = H
Gain: -9.5 dB at G = L, 0 dB at G = M, 9.5 dB at G = H
Output impedance: < 0.1 ohms
Output power: 3,300 mW x 2 at 16 ohms (THD + N: < 0.1 %), 2,000 mW x 2 at 32 ohms (THD + N: < 0.1 %), 250 mW x 2 at 300 ohms (THD + N: < 0.1 %), 125 mW x 2 at 600 ohms (THD + N: < 0.1 %)
Load impedance: > 8 ohms

Topping A90 (Headphone Amp) – Single-Ended Input / Balanced Output

THD + N at 1 kHz (A-weighted): < 0.00007% at 500 mW (32 ohms) / < 0.00006% at 80 mW (300 ohms)
THD at 20 Hz – 20 kHz, 90kBW: < 0.0004% at 500 mW (32 ohms) / < 0.0001% at 80 mW (300 ohms)
SNR at maximum output 1 kHz (A-weighted): 145 dB
Dynamic range at 1 kHz (A-weighted): 145 dB
Frequency response: 20 Hz – 40 kHz (± 0.05 dB)
Output level: 18 Vpp at G = L, 49 Vpp at G = M, 49 Vpp at G = H
AP measured noise level (A-weighted): < 0.9 uVrms at G = L, < 0.9 uVrms at G = M, < 1.4 uVrms at G = H
Actual noise level (A-weighted):< 0.6 uVrms at G = L, < 0.6 uVrms at G = M, < 1.3 uVrms at G = H
Channel crosstalk at 1 kHz: -105 dB
IMD CCIF at 18 kHz + 19 kHz: -118 dB
IMD SMPTE at 60 Hz + 7 kHz: -110 dB at SMPTE 4:1 / -115 dB at SMPTE 1:1
Input sensitivity: < 9.5 Vrms at G = L, < 8.8 Vrms at G = M, < 2.9 uVrms at G = H
Gain: -3.0 dB at G = L, 6 dB at G = M, 15.5 dB at G = H
Output impedance: < 0.2 ohms
Output power: 7,600 mW x 2 at 16 ohms (THD + N: < 0.1 %), 6,400 mW x 2 at 32 ohms (THD + N: < 0.1 %), 1000 mW x 2 at 300 ohms (THD + N: < 0.1 %), 500 mW x 2 at 600 ohms (THD + N: < 0.1 %)
Load impedance: > 8 ohms

Topping A90 (Headphone Amp) – Balanced Input / Output

THD + N at 1 kHz (A-weighted): < 0.00009% at 500 mW (32 ohms) / < 0.00006% at 80 mW (300 ohms)
THD at 20 Hz – 20 kHz, 90kBW: < 0.0004% at 500 mW (32 ohms) / < 0.0001% at 80 mW (300 ohms)
SNR at maximum output 1 kHz (A-weighted): 138 dB
Dynamic range at 1 kHz (A-weighted): 138 dB
Frequency response: 20 Hz – 40 kHz (± 0.01 dB)
Output level: 18 Vpp at G = L, 49 Vpp at G = M, 49 Vpp at G = H
AP measured noise level (A-weighted): < 0.9 uVrms at G = L, < 0.9 uVrms at G = M, < 1.4 uVrms at G = H
Actual noise level (A-weighted):< 0.6 uVrms at G = L, < 0.6 uVrms at G = M, < 1.3 uVrms at G = H
Channel crosstalk at 1 kHz: -102 dB
IMD CCIF at 18 kHz + 19 kHz: -118 dB
IMD SMPTE at 60 Hz + 7 kHz: -110 dB at SMPTE 4:1 / -115 dB at SMPTE 1:1
Input sensitivity: < 9.5 Vrms at G = L, < 8.8 Vrms at G = M, < 2.9 uVrms at G = H
Gain: -3.0 dB at G = L, 6 dB at G = M, 15.5 dB at G = H
Output impedance: < 0.2 ohms
Output power: 7,600 mW x 2 at 16 ohms (THD + N: < 0.1 %), 6,400 mW x 2 at 32 ohms (THD + N: < 0.1 %), 1000 mW x 2 at 300 ohms (THD + N: < 0.1 %), 500 mW x 2 at 600 ohms (THD + N: < 0.1 %)
Load impedance: > 8 ohms

Topping (A90 Preamp) – Single-Ended Input / Output

THD + N at 1 kHz (A-weighted): < 0.00006%
THD at 20 Hz – 20 kHz, 90kBW: < 0.0001%
SNR at 1 kHz (A-weighted): 141 dB
Dynamic range at 1 kHz (A-weighted): 141 dB
Frequency response: 20 Hz – 40 kHz (± 0.05 dB)
Output level: 9 Vpp at G = L, 25 Vpp at G = M, 25 Vpp at G = H
AP measured noise level (A-weighted): < 0.7 uVrms at G = L, < 0.7 uVrms at G = M, < 0.9 uVrms at G = H
Actual noise level (A-weighted):< 0.2 uVrms at G = L, < 0.2 uVrms at G = M, < 0.6 uVrms at G = H
Channel crosstalk at 1 kHz: -106 dB
IMD CCIF at 18 kHz + 19 kHz: -118 dB
IMD SMPTE at 60 Hz + 7 kHz: -110 dB at SMPTE 4:1 / -115 dB at SMPTE 1:1
Input sensitivity: < 9.5 Vrms at G = L, < 8.8 Vrms at G = M, < 2.9 uVrms at G = H
Gain: -9.5 dB at G = L, 0 dB at G = M, 9.5 dB at G = H
Input impedance: 20 ohms

Topping (A90 Preamp) – Balanced Input / Single-Ended Output

THD + N at 1 kHz (A-weighted): < 0.00006%
THD at 20 Hz – 20 kHz, 90kBW: < 0.0001%
SNR at 1 kHz (A-weighted): 137 dB
Dynamic range at 1 kHz (A-weighted): 137 dB
Frequency response: 20 Hz – 40 kHz (± 0.1 dB)
Output level: 9 Vpp at G = L, 25 Vpp at G = M, 25 Vpp at G = H
AP measured noise level (A-weighted): < 0.7 uVrms at G = L, < 0.7 uVrms at G = M, < 0.9 uVrms at G = H
Actual noise level (A-weighted):< 0.2 uVrms at G = L, < 0.2 uVrms at G = M, < 0.6 uVrms at G = H
Channel crosstalk at 1 kHz: -102 dB
IMD CCIF at 18 kHz + 19 kHz: -118 dB
IMD SMPTE at 60 Hz + 7 kHz: -110 dB at SMPTE 4:1 / -115 dB at SMPTE 1:1
Input sensitivity: < 9.5 Vrms at G = L, < 8.8 Vrms at G = M, < 2.9 uVrms at G = H
Gain: -9.5 dB at G = L, 0 dB at G = M, 9.5 dB at G = H
Input impedance: 20 ohms

Topping (A90 Preamp) – Single-Ended Input / Balanced Output

THD + N at 1 kHz (A-weighted): < 0.00006%
THD at 20 Hz – 20 kHz, 90kBW: < 0.0001%
SNR at 1 kHz (A-weighted): 145 dB
Dynamic range at 1 kHz (A-weighted): 145 dB
Frequency response: 20 Hz – 40 kHz (± 0.05 dB)
Output level: 18 Vpp at G = L, 49 Vpp at G = M, 49 Vpp at G = H
AP measured noise level (A-weighted): < 0.9 uVrms at G = L, < 0.9 uVrms at G = M, < 1.4 uVrms at G = H
Actual noise level (A-weighted):< 0.6 uVrms at G = L, < 0.6 uVrms at G = M, < 1.3 uVrms at G = H
Channel crosstalk at 1 kHz: -105 dB
IMD CCIF at 18 kHz + 19 kHz: -118 dB
IMD SMPTE at 60 Hz + 7 kHz: -110 dB at SMPTE 4:1 / -115 dB at SMPTE 1:1
Input sensitivity: < 9.5 Vrms at G = L, < 8.8 Vrms at G = M, < 2.9 uVrms at G = H
Gain: -3.5 dB at G = L, 6.0 dB at G = M, 15.5 dB at G = H
Input impedance: 40 ohms

Topping (A90 Preamp) – Balanced Input / Output

THD + N at 1 kHz (A-weighted): < 0.00006%
THD at 20 Hz – 20 kHz, 90kBW: < 0.0001%
SNR at 1 kHz (A-weighted): 138 dB
Dynamic range at 1 kHz (A-weighted): 138 dB
Frequency response: 20 Hz – 40 kHz (± 0.1 dB)
Output level: 18 Vpp at G = L, 49 Vpp at G = M, 49 Vpp at G = H
AP measured noise level (A-weighted): < 0.9 uVrms at G = L, < 0.9 uVrms at G = M, < 1.4 uVrms at G = H
Actual noise level (A-weighted):< 0.6 uVrms at G = L, < 0.6 uVrms at G = M, < 1.3 uVrms at G = H
Channel crosstalk at 1 kHz: -102 dB
IMD CCIF at 18 kHz + 19 kHz: -118 dB
IMD SMPTE at 60 Hz + 7 kHz: -110 dB at SMPTE 4:1 / -115 dB at SMPTE 1:1
Input sensitivity: < 9.5 Vrms at G = L, < 8.8 Vrms at G = M, < 2.9 uVrms at G = H
Gain: -3.5 dB at G = L, 6.0 dB at G = M, 15.5 dB at G = H
Input impedance: 40 ohms