Our Take
Topping, established in 2008, is very experienced in developing audio products such as power amplifier, headphone amplifier, DAC, lossless media player and etc. They produce especially a full range of DAC amplifiers from desktop, portable to Bluetooth ones. Flagship DAC of Toppind D70 is popular since releasing last year but it would be much better if it is with Bluetooth. R&D, most important part of TOPPING, update this in their new flagship DAC D70B.
Product Details
High-Resolution Music
CD’ s resolution is 16bit/44.1kHz while SACD’ s is DSD64. But what D70 BT can support up to 32bit/768kHz & DSD512, which are much beyond the CD and SACD. Moreover, Topping opts the Thesycon customization driver (Win 7 and above), providing much better support for DSD.AK4497 is flagship model in AKM company. Topping use one AK4497 working for one sound channel in D70. So the sound and channel separation will much better than the situation of using only one piece of AK4497.
Tech Specs
- Support
- USB in: 44.1–768 kHz/16–32 bit, DSD64–DSD256 (DoP), DSD64–DSD512 (native)
- Opt/AES/coax in: 44.1–192 kHz/16–24 bit, DSD64 (DoP)
- Coax out: 44.1–192 kHz/16–24 bit
- Headphone Out, 6.35mm
- THD+N, A-weighted: <0.005% at 1 kHz, 345 mW (32 ohms); <0.007% at 20–20 kHz, 345 mW (32 ohms); <0.0008% at 1 kHz, 78 mW (300 ohms); <0.0008% at 20–20 kHz, 78 mW (300 ohms)
- SNR, A-weighted: >121 dB at 1 kHz
- Frequency response: 20 Hz–20 kHz (+/- 0.35 dB)
- Output level: 13.3 Vpp at 32 ohms, 18.7 Vpp at 300 ohms
- Noise: <5.2 uVrms
- Crosstalk: -124 dB at 1 kHz
- Channel balance: 0.3 dB
- Output impedance: <10 ohms
- Output power: 690 mW x 2 at 32 ohms, THD+N <1%; 146 mW x 2 at 300 ohms, THD+N <1%
- Drive ability: 16–300 ohms
- Headphone Out, Balanced
- THD+N, A-weighted: <0.002% at 1 kHz, 515 mW (32 ohms); <0.003% at 20–20 kHz, 515 mW (32 ohms); <0.0006% at 1 kHz, 273 mW (300 ohms); <0.0008% at 20–20 kHz, 273 mW (300 ohms)
- SNR, A-weighted: >120 dB at 1 kHz
- Frequency response: 20 Hz–20 kHz (+/- 0.12 dB)
- Output level: 16.2 Vpp at 32 ohms, 36.2 Vpp at 300 ohms
- Noise: <8.8 uVrms
- Crosstalk: -129 dB at 1 kHz
- Channel balance: 0.3 dB
- Output impedance: <20 ohms
- Output power: 1,000 mW x 2 at 32 ohms, THD+N <1%; 546 mW x 2 at 300 ohms, THD+N <1%
- Drive ability: 32–600 ohms
- Line Out / Coax Input, RCA
- THD+N, A-weighted: <0.0005% at 1 kHz, <0.0006% at 20–20 kHz
- SNR, A-weighted: >122 dB at 1 kHz
- Frequency response: 20 Hz–20 kHz (+/- 0.35 dB)
- Output level: 2 Vrms at 0 dBFS
- Noise: <1.7 uVrms
- Crosstalk: -127 dB at 1 kHz
- Channel balance: 0.3 dB
- Output impedance: 100 ohms
- Line Out / Coax Input, XLR
- THD+N, A-weighted: <0.0005% at 1 kHz, <0.0006% at 20–20 kHz
- SNR, A-weighted: >123 dB at 1 kHz
- Frequency response: 20 Hz–20 kHz (+/- 0.35 dB)
- Output level: 4 Vrms at 0 dBFS
- Noise: <2.6 uVrms
- Crosstalk: -133 dB at 1 kHz
- Channel balance: 0.3 dB
- Output impedance: 200 ohms
- Physical
- Input: USB, opt, AES, coax
- Digital input: Coax
- Line out: XLR, RCA
- Headphone out: 6.35 mm, balanced
- Power input: AC110/AC220, 50 Hz/60 Hz
- Dimensions: 9.8 x 8.1 x 2 in (25 x 20.5 x 5 cm)
- Weight: 4.3 lbs (1.95 kg)
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