Focusrite
ISA One
intermediate
$699
Used market: $575*
Specifications
3 of 7 values have a recorded source- Type
- outboard_preamp·
- Added Gain dB
- 60✓
- Input Connector
- 3-Pin XLR Female + 1/4" Instrument DI (front)·
- Output Connector
- 3-Pin XLR Male·
- Expert Description
- En: 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. · Uk: Одноканальний трансформаторний преамп серії ISA: мікрофонне підсилення кроками по 10 дБ від 0 до 60 дБ і зверху плавний trim 0–20 дБ. Інструментальний DI окремий, плавні 10–40 дБ, з перемиканням вхідного опору 2,4 МΩ / 470 кΩ.·
- Provides Phantom Power
- yes✓
- Requires Phantom Power
- no✓
Expert Audio Engineering Commentary
Gain Staging Advice
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.
* Estimated with the depreciation fallback (~82% retained value). · checked on 8/5/2026