Sound Devices A20-TX digital SpectraBand + VHF body-pack transmitter with built-in timecode-enabled recorder, 169-1525 MHz
Finding a tool that can serve multiple purposes is the goal of every audio professional. More flexible gear means less, less for you to carry in a bag or fit in a case, and less gear to rent for a gig. That’s the philosophy behind the A20-TX digital wireless transmitter. Sound Devices engineered it to be compatible with more input sources than any other transmitter, including two- or three-wire lavs, dynamic mics, phantom-powered condenser mics, guitars, balanced line-level sources, and even AES digital mics. The A20-TX transmitter’s multipurpose input saves you from having to pack or rent more transmitters.
True Balanced Input:
The Sound Devices A20-TX transmitter includes an industry first: a full, true balanced ultra-low-noise, high-headroom mic preamp. In fact, this is the same preamp built into Sound Devices’ vaunted 8-Series mixers. The A20-TX mic preamp is a big step up from the excellent mic preamp built into the original A10-TX transmitter in terms of noise, headroom, and sonic purity.
Excellent Battery Life:
The A20-TX transmitter features battery life of up to 12 hours. Additionally, the A20-TX’s flexible powering scheme allows the use of many battery types, including standard alkaline or NiMh AA batteries, rechargeable Li-Ion batteries, rechargeable LiFePO4 batteries, or even USB battery packs.
The A20-TX transmitter boasts industry-leading features like Sound Devices’ proprietary NexLink 2.4 GHz long-range wireless remote control technology that allows multiple A20-TX transmitters to be controlled and timecode synced dependably from an A20-Nexus or A20-Nexus Go digital receiver. NexLink works over long distances, even through Wi-Fi, Bluetooth, and other 2.4 GHz interference. The A20-TX transmitter’s long-range modulation achieves excellent operational range. The A20-TX also includes Sound Devices’ proprietary SpectraBand technology, which enables the A20-TX transmitter to tune over a super wide range of 169-1525 MHz.
For the applications that call for a user-actuated switch, the A20-TX transmitter features the industry’s first physically removable switch. Its large size, positive tactile operation, and magnetic activation give users ultimate confidence and reliability.
With GainForward, there is no gain setting on the transmitter! You control your A20-TX transmitter’s audio gain, either directly at the mixer’s digital trim control or at the wireless receiver, while maintaining the best audio performance in the industry. If the source is too soft or too loud, just use a downstream mixer’s digital trim gain control to make adjustments. No more bothering the talent to make gain changes.
There’s no need to stock special batteries for the A20-TX transmitter. It can work with any type of AA batteries, no matter the chemistry.
You can easily view settings and menus with the A20-TX transmitter’s e-Paper Display, even in sunlight or when powered down and its batteries removed. Need to change a setting in the dark? Open the battery door and the screen’s backlight turns on for easy visibility.
Worldwide VHF and UHF tuning range from 169 MHz-1525 MHz
Up to 12 hours battery runtime
Eco-friendly operation from rechargeable Lithium batteries or from standard AA batteries
Built-in battery charger via USB-C
Full remote control of the A20-TX via A20-Remote companion app and from A20-Nexus and A20-Nexus Go via long-range NexLink
State-of-the-art 100% digital long-range modulation delivers the longest transmission distance of any system on the market
RF Power output from 2 mW to 40 mW
Lemo input supports 2-wire or 3-wire mono lav, balanced mic, switchable 12, 48V phantom, balanced line-level, AES3, AES42 (compatible with Schoeps SuperCMIT), and guitar (w/ optional Smart Guitar Cable)
GainForward Architecture, no gain control to worry about on the A20-TX
Full 10 Hz 20 kHz audio bandwidth
Sound Devices 8-Series, fully balanced mic preamp built in (140 dB dynamic range)
Ultra-quiet lavalier mic preamp (134 dB dynamic range)
Built-in 32-bit float, 48 kHz recorder with removable micro-SD card
Ultra-stable timecode built in, auto jammed via wireless NexLink
Sunlight-readable e-Paper screen for control and display. Display persists when powered off
USB-C for pairing with the A20-Nexus, file offload, charging, and timecode jamming
A20-TX Switch: optional user-programmable bayonet switch, magnetically sensed and physically removable
169 to 1525 MHz
Off, Low 2mW, Normal 10mW, High 20mW, Extra High 40mW
proprietary, 100% digital RF modulation
UHF RF: SMA connector, removable antenna
10 Hz to 20 kHz, +/1 dB re 1 kHz
2-wire or 3-wire type lavalier mics supported
true, fully balanced, Sound Devices 8-Series mic preamp
true, fully balanced line-level input (no external resistors required)
AES digital input with common mode power for Digital mics such as Schoeps SuperCMIT
AES digital input without common mode power
auto-selected when connected with A20-TX Smart Guitar Cable
e-Paper screen highly visible in direct sunlight
A20-Remote Android, iOS, and iPad app via Bluetooth 5.2 LE
input via XL-TC-USBC-LEMO, XL-TC-USBC-BNC, USB-A to USB-C (from 8-Series) or wirelessly over NexLink (from A20-Nexus/A20-Nexus Go)
mass Storage (USB-C): USB 2.0 high speed for file transfer
1.5V Alkaline, Lithium primary, NiMH AA batteries, 3 for operation
built-in charging of Lithium-Ion and LiFePO4 batteries via USB-C
up to 12 hours (depending on battery chemistry, number of batteries, RF power, input type, mode)
operating: -10° C to 38° C
WEIGHT: 98g (without batteries)
Only logged in customers who have purchased this product may leave a review.