本頁面包含以下產品：
- Ferrum ERCO 耳機擴大 + DAC 一體機（全新藝聲公司貨）
以下我整理了最常有人問的幾個相關問題，在下面這幾隻影片裡做了詳盡的回答。推薦你先看看，如果還有疑問，就傳 Line 訊息跟我討論吧！陳寗的 Line：http://bit.ly/ningline
—
- Headphone output gain: balanced -5.8 dB, +6 dB, +17.8 dB; single ended -11.8 dB, 0 dB, +11.8 dB
- Operation: fully balanced, proprietary IC power amp
- Power inputs: 5.5/2.5 mm DC connector center positive; proprietary FPL 4-pin DC connector (FPL)
- Analog inputs: RCA (Consumer level; Pro option with future software update)
- Digital inputs: USB-C (MQA, up to PCM 32-bit/384 kHz, DSD256, DoP128); S/PDIF coaxial (MQA, up to PCM 24-bit/192 kHz, DoP64); S/PDIF optical (MQA, up to PCM 24-bit/96 kHz guaranteed, should work up to PCM 24-bit/192 kHz and DoP64 – depends of user’s optical cable and transmitter)
- DAC chip: ESS Sabre ES9028PRO
- PCM sample rates: 44.1 / 48 / 88.2 / 96 / 176.4 / 192 / 352.8 / 384 kHz
- DSD sample rates: 2.8224 / 3.072 / 5.6448 / 6.144 / 11.2896 / 12.288 MHz
- MQA: decoder and renderer (USB, OPTO and COAX inputs)
- DAC resolution: PCM up to 384k@32bit; DSD up to 256 (11.2 MHz / 12.2 MHz)
- Headphone jack outputs: balanced 4.4 mm (TRRRS); unbalanced 6.35 mm (TRS)
- Line outputs: balanced XLR; unbalanced RCA (both Consumer level; Pro with future software update)
- Volume control: analogue with bypass option (bypass for line outputs only)
- Frequency response: 10 Hz – 30 kHz (+/- 0.05 dB); 10 Hz – > 200 kHz (+/- 1 dB)
- Output power unbalanced: 300 mW into 300 Ω; 1.7 W into 50 Ω
- Output power balanced: 1.2 W into 300 Ω; 6.1 W into 50 Ω
- THD on balanced output: < 0.00018% / -115 dB, 1 mW into 16 Ω; < 0.00018% / -115 dB, 100 mW into 16 Ω
- THD on unbalanced output: < 0.00032% / -110 dB, 1 mW into 16 Ω; < 0.00057% / -105 dB, 100 mW into 16 Ω
- Dynamic range analog: 130 dB (A-weighted)
- Dynamic range digital: 120 dB (A-weighted)
- Input impedance: 47 kΩ
- Output impedance unbalanced: 22 Ω on pre-amp
- Output impedance balanced: 44 Ω on pre-amp
- Output impedance Headphones: < 0.3 Ω
- Power consumption: idle <15 W
- Power adapter: 100-240 VAC to 22-30 VDC
- Dimensions (W x D x H): 21.7 cm x 20.6 cm x 5 cm / 8.6” x 8.1” x 2.0”
- Weight: 1.8 kg / 3.97 lbs
