New
KT-4 field recorder / 32-bit float / 4 inputs
Record the room you’re standing in.
Four quiet preamps, 32-bit float and a body that fits a coat pocket. Never ride a gain knob again — the KT-4 keeps the whisper and the thunderclap in the same take.
Ships in 2–4 days
2-year warranty
30-day returns
REC 00:42:17
48 kHz · 32-bit float
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Input levels
No clip
CH1
−12 dB
CH2
−17 dB
CH3
−26 dB
CH4
+4 dBFS
CH4 just went over full scale. In 32-bit float that’s fine — pull it down in post.
212 g
With batteries
32-bit
float — no clipping, ever
4×
XLR/TRS inputs with 48V
14 h
on two AA cells
−128
dBu preamp noise (EIN)
Engineered for the field.
The KT-4 is built around one idea: the sound you came for shouldn’t depend on where you set the gain. Everything else stays out of the way.
01
32-bit float, dual converters
Two converters per channel run in parallel and merge in real time. Set it, forget it, and fix levels later without lifting the noise floor.
02
Four locking combo inputs
XLR/TRS on every channel with 48V phantom, and preamps quiet enough for distant birdsong at −128 dBu EIN.
03
14 hours in the field
Two AA cells, a USB-C power bank or both — with hot-swap, so a long take never stops.
04
Timecode and app control
A built-in TCXO holds sync with cameras for a full day. Arm, name and mark takes from your phone.
Field note 014 · 05:12 · Dawn chorus
Peaked at +9 dBFS. Kept every note.
A blackbird landed a metre from the capsules mid-take. On a 24-bit recorder that’s a ruined file. On the KT-4 it’s a gain move in post.
Read about 32-bit float →Audio core
Converters
Dual ADC per channel, 32-bit float
Sample rates
44.1 / 48 / 96 / 192 kHz
Preamp noise
−128 dBu EIN (A-weighted)
Max input
+24 dBu line, +4 dBu mic
Built-in mics
Rotatable X/Y pair, 90° or 120°
Power & build
Battery
2× AA, up to 14 hours
External power
USB-C, 5 V, hot-swap
Weight
212 g with batteries
Size
70 × 148 × 38 mm
Made for people who listen.
Compare kits →
01
Nature & ambience
Leave it on a stand at dusk; the low-noise preamps pick up what your ears can’t.
02
Location sound
Four channels, timecode and a locking XLR on every input for boom and lavs.
03
Documentary kits
Small enough to live in the camera bag, rugged enough to stay there.
Owners say
4.9
Average of 1,240 owner reviews · demo data
“I used to bring a second recorder as a safety track. Now I bring a second KT-4 — and point it somewhere else.”
MO
Mira Okafor
Wildlife sound recordist · fictional testimonial
KT-4 · In stock · Ships in 2–4 days
Take it outside.
Thirty days to record anything you like. If the KT-4 isn’t for you, send it back — we cover the return label.
$389
Body only
Includes recorder, two AA cells, USB-C cable, foam windscreens and app access.
32-bit float on all four inputs
Timecode in and out
2-year warranty, free firmware updates
30-day money-back guarantee
Questions.
Short answers to what people ask before they buy. More on the Support page.
Still curious?
support@kilotone.exampleVisit Support →What does 32-bit float actually change?
It gives the file around 1,500 dB of headroom. As long as the analogue stage doesn’t overload — and the KT-4 takes up to +24 dBu — any level can be pulled back in post with no added noise.
Can I use it as a USB audio interface?
Yes. Connect it to a Mac, PC, iPad or Android phone over USB-C and it appears as a class-compliant 4-in, 2-out interface. No drivers needed.
Which microphones work with it?
Any dynamic, condenser or lavalier mic with an XLR or 3.5 mm TRS plug. Every input has switchable 48V phantom and plug-in power.
What cards and batteries does it take?
microSDXC cards up to 1 TB (V30 or faster) and two AA cells — alkaline, NiMH or lithium. USB-C power can run at the same time.
Is there an app?
The free Kilotone Field app for iOS and Android arms, names and marks takes, and installs firmware updates. It never needs an account.
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One field note a month.
Recording tips, firmware news and one sound from somewhere quiet. Unsubscribe any time.
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KT-4 · Designed for listening