Adastra A4 Dual Stereo PA Amplifier
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Adastra A4 Dual Stereo PA Amplifier
Fully featured PA amplifier with 2 independent stereo zone outputs and mixer section for 2 microphones and a stereo audio source. An inbuilt media player section offers playback of mp3 audio tracks from USB drive or SD card. It also has a Bluetooth receiver. A rotary switch for each output zone selects the stereo playback audio from a choice of 2 rear stereo inputs, a front 3.5mm stereo input or the built-in media player. Mic inputs 1 and 2 are live to both output zones at all times. 2 pairs of speaker connections on the rear panel are via 4mm binding posts, which can drive up to 2 x 8 Ohm speakers on each of the 4 channels. Designed to offer installers a comprehensive dual zone PA for bars, restaurants and function rooms.
This is a practical option if you need a stereo amplifiers with clearly specified features and straightforward compatibility. The details below come from AVSL's current product information, so you can check the connections, size and performance before ordering.
What Is It Actually For?
It is designed for independent stereo playback to 2 separate zones. The remaining features make it useful where you want a tidy, dependable setup without unnecessary complication.
Why Choose This One?
The A4 gives you a sensibly specified stereo amplifiers from Adastra. It is worth considering when you want the stated specification without paying for features that may not be relevant to your setup.
Who Is It For?
This is aimed at home users, installers, performers, schools, venues and production teams who need a suitable stereo amplifiers. Suitability will depend on the connections and specification your system requires, so those are worth checking carefully.
Key Features
- Independent stereo playback to 2 separate zones
- Media player with USB/SD playback
- Bluetooth receiver
Specifications
| Brand | Adastra |
|---|---|
| Model | A4 |
| SKU | 953.404UK |
| EAN | 5015972203132 |
| Power supply | 230Vac, 50Hz (IEC) |
| Amplifier : construction | Class D |
| Microphone inputs | 2 x 6.3mm jack (mono) |
| Auxiliary input | 3.5mm stereo jack |
| Line inputs | Line 1: L+R (6.3mm jack/RCA), Line 2: L+R (RCA) |
| Audio source | USB/SD mp3 playback, BT receiver |
| Antenna connection | F type (FM tuner) |
| Input controls | Aux, Media, Line1, Line2, Mic1, Mic2, Talkover |
| Line output | 4 x RCA |
| Speaker outputs | 4mm binding posts (4 channels) |
| Output controls | 2 x source select, 2 xBass, 2 xTreble, Ch1, Ch2, Ch3, Ch4 |
| Protection | Thermal, over-current, over-voltage, short-circuit |
| Dimensions | 482 x 260 x 88mm |
| Frequency response | 20Hz - 20kHz ±0.5dB |
| Input sensitivity : line | 0.775Vrms |
| Input sensitivity : aux | 0.480Vrms |
| Input impedance | 20k Ohms (balanced), 10k Ohms (unbalanced) |
| Dynamic range | 92dB |
| THD +N | <0.1% |
| Bluetooth version | 2.3 |
| Packaged weight | 7.8250kg |
| Packaged dimensions | 135 x 135 x 505 mm |
| Country of origin | CN |
| Tariff code | 8518500090 |
What’s Included
- 1 x Adastra A4 Dual Stereo PA Amplifier
Please Note
Please check connections, measurements and compatibility before ordering. Batteries, cables, fixings and accessories are only included where specifically stated in the product description.
Not Sure If This Is Right?
If you are not sure whether this stereo amplifiers will work with your existing equipment, get in touch with the make and model of the equipment you are connecting it to and we will help you check.