FocusriteISA One
intermediate
New retail price (MSRP)
$699
Used market: $575*
Specifications
3 of 8 values have a recorded source- Type
- outboard_preamp·
- Inserted gain
- 60✓
- Input connector
- 3-Pin XLR Female + 1/4" Instrument DI (front)·
- Output connector
- 3-Pin XLR Male·
- Description
- Single-channel ISA transformer preamp: mic gain in 10 dB steps from 0 to 60 dB, plus a continuous 0-20 dB trim on top. The instrument DI is separate, 10-40 dB variable, with switchable input impedance 2.4 MΩ / 470 kΩ.·
- Passes phantom power
- yes✓
- Needs phantom power
- no✓
- Indexable Locales
- en·
Expert Audio Engineering Commentary
Gain staging
The impedance selector on the mic input is a tone control, not a matching aid — the four ISA settings load the microphone differently and audibly change the low end of a dynamic.
Production Warning
Focusrite publish the stepped range (0-60 dB) and the trim (0-20 dB) separately and never state a single total figure, so the catalogue records the stepped maximum of 60 dB. In practice the trim adds on top of it.
Setups using this gear
* Estimated with the depreciation fallback (~82% retained value).