Detail 01
ISA 110 circuit with Lundahl transformer
The unit is described as using the original ISA 110 preamp circuit and a Lundahl input transformer.
Product detailSKU #1275425410395
FocusriteISA One Classic Single-Channel Mic Pre
1/8
Independent shopping perspective
The Korena take
A portable, single-channel Focusrite ISA preamp built around the ISA 110 circuit and a Lundahl input transformer, with flexible impedance choices, DI capability, and an optional digital-conversion upgrade.
Strong match
Who this is for
- Recording engineers seeking the stated ISA 110 preamp circuit and Lundahl input transformer
- Vocal and instrument recording where a front-panel DI feed is useful
- Users who want four input-impedance settings for tone shaping
- Mobile studio or live-vocal use requiring an all-metal enclosure
Consider the trade-offs
When to look elsewhere
- Anyone needing more than one preamp channel
- Buyers who require A/D conversion as a standard included feature
- Users who do not need microphone preamplification or a DI input
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
Four impedance settings
The supplied description says these settings range from transparent clarity to a rounder, fuller sound.
Detail 03
Parallel DI
The front-panel DI provides a separate feed that can be blended with the preamp signal.
Detail 04
Optional 24-bit/192 kHz A/D card
Digital conversion is available as an add-on rather than stated as standard.
Final check
Know before you order
- 01The 24-bit/192 kHz A/D card is optional.
- 02This is a single-channel preamp.
- 03The supplied data states four impedance settings and separate DI level/impedance controls.
- 04The purchase includes the bx_console Focusrite plug-in, according to the supplied description.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Is the ISA One a multi-channel preamp?
No. It is described as a single-channel mic preamp.
02Does it include digital conversion?
The supplied description lists a 24-bit/192 kHz A/D card as optional.
03Can I connect an instrument directly?
Yes. The supplied description states that it has a front-panel DI input with high- and low-impedance selection and level adjustment.
04What plug-in is included?
The supplied description states that purchase includes the bx_console Focusrite plug-in.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
13 detailsConnections & power
- Mic input
- XLR x 1
- DI output
- XLR x 1
- EIN (equivalent input noise)
- –126dB measured at 60dB of gain with 150 ohm terminating impedance and 22Hz/22kHz band-pass filter
- Cue mix left input
- TRS Jack x 1
- Noise at main output with gain at unity (0dB)
- -96dBu measured with a 22Hz/22kHz band-pass filter
- External ADC input
- TRS Jack x 1
- Cue mix right input
- TRS Jack x 1
- Frequency Response at 40dB gain with –40dB input
- –2.5dB down at 10Hz and 0dB at 100kHz
- Frequency Response at 10dB gain with –10dB input
- 10Hz-100kHz +/- 0.6dB
- Line input
- XLR x 1 and TRS x1
- Headphones output
- TRS Jack x 1
- Balanced line output
- XLR x 1
- Instrument input TRS Jack
- XLR x 1
34 detailsOther
- 0
- +22dBu
- 2
- +20dBu
- –6
- +16dBu
- Crosstalk Channel to Channel
- with 10dB@1kHz input to chA, chB output: 104dBrA. With 10dB@10kHz input to chA, chB output: 84dBrA
- Noise at maximum gain (+40dB)
- –62dBu measured with a 22Hz/22kHz band-pass filter
- –18
- +4dBu
- THD at unity gain (0dB)
- 0.001% measured with a 0dBu input signal and with a 22Hz/22kHz band-pass filter
- –12
- +10dBu
- Send
- TRS Jack x 1
- Moving coil (MC) meter is factory calibrated to 0VU
- +4dBu with 1kHz sinewave
- Tier
- new
- Gain range
- 10dB to 40dB continuously variable
- ISA110
- 1,400 ohms
- DI through
- TS Jack x 1
- Signal to noise ratio relative to 0dBFS (+22dBu)
- 118dB
- THD at minimum gain (+10dB)
- 0.001% measured with a 10dBu input signal and with a 22Hz/22kHz band-pass filter
- High
- greater than1 mohm
- Category Source
- detail
- Return
- TRS Jack x 1
- Frequency response at maximum gain (60dB)
- –3dB down at 16Hz and –3dB down 118kHz
- Noise at minimum gain (+10dB)
- –92dBu measured with a 22Hz/22kHz band-pass filter
- –42
- -20dBu
- Frequency response at minimum gain (0dB)
- –0.5dB down at 10Hz and –3dB down at 125kHz
- Korena Special
- false
- Med
- 2,400 ohms
- THD at medium gain (30dB)
- 0.0009% measured with a 1kHz –20dBu input signal and with a 22Hz/22kHz band-pass filter
- Roll off
- 18dB per octave 3-pole filter
- Input Impedance
- 10kΩ from 10Hz to 200kHz
- Low
- greater than 300 kohm
- Signal to noise ratio relative to max headroom (9dBu)
- 106dB
- Peak LED meters calibrated in the detent position for 0dBFS
- +22dBu, calibration is adjustable on the rear panel to allow 0dBFS to equal +10dBu to +26dBu
- Frequency Response at unity gain (0dB)
- –0.3dB down at 10Hz and -3dB down at 200kHz
- Source Id
- site51275425410395
- Prop65
- WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer, and Lead, which is known to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
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