BTR17
interface_dac
$200
Gebrauchtmarkt: $120*
Technische Daten
4 von 10 Werten mit vermerkter Quelle- Type
- DAC/Amp Combo·
- Bus Powered
- yes·
- Max Gain dB
- 0·
- Analog Inputs
- ·
- Analog Outputs
- 3.5mm Headphones, 4.4mm Balanced Headphones·
- Digital Inputs
- USB-C, Bluetooth·
- Min Usb Power W
- 2.5✓
- Headphone Output
- Max Power mW: 140 · Max Voltage Vrms: 2.12 · At Impedance ohms: 32 · Output Impedance ohms: 1·
- Max Sample Rate kHz
- 768·
- Phantom Power Provided
- no·
Kommentar des Toningenieurs
Headroom Notes
FiiO publishes two complete sets of numbers for the same 3.5 mm jack: desktop mode (280 mW into 32 ohms, 8.5 Vp-p) and non-desktop mode (140 mW into 32 ohms, 6.5 Vp-p). Retail listings quote the desktop set. What is recorded here is the non-desktop one, because that is what a phone gives you: exactly half the power, one gain step less. Desktop mode needs the second USB-C port fed from a charger.
Amplification Warning
The voltage stored is derived from the power rating (140 mW into 32 ohms = 2.12 V), not from the 6.5 Vp-p row, which converts to 2.30 V. The two disagree because the peak-to-peak figure is reached on a light load and the power figure on 32 ohms; on 300 ohms the same mode is rated 20 mW, or 2.45 V.
Was im Datenblatt tatsächlich steht
Wörtlich von der Herstellerseite zitiert, mit dem Datum der Prüfung. Wir behaupten das Gedruckte, nicht die Absicht dahinter.
«Peak output voltage 8.5Vp-p»
The row titled peak output voltage carries a genuine peak-to-peak value here (8.5 Vp-p = 3.00 V RMS, which matches the 30 mW into 300 ohms rating on the same line). The identically titled row on the KA15 datasheet carries an RMS value instead. The same words name two quantities that differ by a factor of 2.83, so the label alone cannot tell you which one you are reading.
geprüft am 5.8.2026* Geschätzt über das Abschreibungsmodell (~60% Restwert). · geprüft am 5.8.2026