TOPPING A30 PRO

Pre owned. In excellent condition. Free of visible signs of wear. Comes with manual and original packaging.

The Topping A30 Pro is a high-quality headphone amplifier designed for headphone enthusiasts seeking precise and immersive listening. With two headphone outputs of different impedances and a three-level adjustable gain, it easily adapts to all types of headphones, from highly sensitive in-ear monitors to high-impedance over-ear models. Its symmetrical amplification circuit ensures outstanding performance, delivering rich, detailed, and natural sound.

On the connectivity side, the A30 Pro features balanced XLR and unbalanced RCA inputs, while the headphone outputs include an unbalanced 6.35 mm jack, a balanced 4-pin XLR, and a balanced 4.4 mm jack. The amplifier also provides two pass-through outputs, either unbalanced RCA or two mono 6.35 mm jacks for balanced output, which are not preamplifier outputs.

The A30 Pro employs the optimized NFCA circuit for exceptional unbalanced performance. Ten OPA1656 operational amplifiers connected in parallel, combined with UHGF (Ultra High Gain Feedback) technology, ensure excellent AC and DC characteristics. Its high current capability allows it to drive a wide range of headphones effortlessly, while ultra-low noise of just 0.3 µV and a dynamic range of 145 dB deliver a vivid, precise, and engaging sound experience.

The connector panel is comprehensive and versatile, including unbalanced RCA and balanced XLR inputs, unbalanced RCA outputs, balanced pass-through via two mono 6.35 mm jacks, and three dedicated headphone outputs: balanced 4.4 mm, balanced XLR 4-pin, and unbalanced 6.35 mm. A GND/LIFT switch allows elimination of hum caused by ground loops when using RCA inputs with multiple devices, by using the connected equipment’s ground instead of the A30 Pro’s.

For headphones with an impedance above 250 Ω, the A30 Pro operates in Class A, ensuring excellent audio quality even with demanding models. Its combination of versatility, advanced circuits, and adjustable gain makes the Topping A30 Pro suitable for any headphone setup, delivering a detailed, powerful, and immersive listening experience.

Technical specifications:

• Product type: Headphone amplifier
• Inputs: 1x RCA stereo unbalanced; 1x XLR stereo balanced
• Headphone outputs: 1x 6.35 mm unbalanced; 1x 4.4 mm balanced; 1x XLR 4-pin balanced
• Pass-through outputs: 1x RCA stereo unbalanced; 2x 6.35 mm mono balanced
• THD: 0.00009% @ 1 kHz
• SINAD: 121 dB
• SNR: 128 dB @ Medium Gain 4V In/Out; 95 dB @ Medium Gain 50 mV Out 600 Ω
• Frequency response: 10 Hz–30 kHz
• THD+N @ 1 kHz A-Weighting: <0.00007% @ 3.5 W 32 Ω; <0.00006% @ 90 mW 300 Ω (unbalanced); <0.00007% @ 3.2 W 32 Ω; <0.00006% @ 86 mW 300 Ω (balanced)
• THD 20 Hz–20 kHz: <0.00008% @ 760 mW 32 Ω; <0.00007% @ 81 mW 300 Ω (unbalanced); <0.00007% @ 760 mW 32 Ω; <0.00007% @ 81 mW 300 Ω (balanced)
• Maximum SNR @ 1 kHz A-Weighting: 145 dB (unbalanced); 140 dB (balanced)
• SNR @ 50 mV Out 1 kHz: 104 dB (unbalanced and balanced)
• Dynamic range @ 1 kHz A-Weighting: 145 dB (unbalanced); 140 dB (balanced)
• Frequency response: 20 Hz–40 kHz ±0.05 dB (unbalanced); 20 Hz–40 kHz ±0.1 dB (balanced)
• Output level: 34 Vpp @ G=L; 34 Vpp @ G=M; 45 Vpp @ G=H (unbalanced); 6.6 Vpp @ G=L; 34 Vpp @ G=M; 45 Vpp @ G=H (balanced)
• Noise @ A-Weighting: <0.3 µVrms @ G=L; <0.3 µVrms @ G=M; <0.9 µVrms @ G=H (unbalanced); <0.3 µVrms @ G=L; <0.3 µVrms @ G=M; <1.1 µVrms @ G=H (balanced)
• Crosstalk @ 1 kHz: -106 dB (unbalanced); -101 dB (balanced)
• IMD CCIF @ 18+19 kHz: -116 dB (unbalanced and balanced)
• IMD SMPTE @ 60 Hz + 7 kHz: -110 dB SMPTE 4:1; -115 dB SMPTE 1:1 (unbalanced); -110 dB SMPTE 4:1; -116 dB SMPTE 1:1 (balanced)
• Input sensitivity: 60 Vrms @ G=L; 12.6 Vrms @ G=M; 2.7 Vrms @ G=H (unbalanced); 12.7 Vrms @ G=L; 12.7
• Vrms @ G=M; 2.7 Vrms @ G=H (balanced)
• Gain: -14 dB @ G=L; 0 dB @ G=M; 14 dB @ G=H (unbalanced and balanced)
• Output impedance: <0.1 Ω (unbalanced and balanced)
• Output power: 2x 6000 mW @ 16 Ω THD+N <0.1%; 2x 5500 mW @ 32 Ω THD+N <0.1%; 2x 840 mW @ 300 Ω THD+N <0.1%
• Dimensions: 174 × 138 × 45 mm
• Weight: 870 g