A series of PA amplifiers with mixing and zone capabilities from Adastra. Amplifiers within this range include features such as FM radio reception, USB/SD card media playback and Bluetooth reception.
A2 Stereo 200W output
Designed to offer installers a flexible solution for P.A. and music playback in bars, restaurants and function rooms, Adastra A2 is a stereo amplifier with mixer section for two microphones, and a stereo audio source. The Class D amplifier has an inbuilt media player section offers playback of mp3 audio tracks from USB drive or SD card, and also has a Bluetooth receiver along with FM radio tuner. A rotary switch selects between two rear stereo inputs, a front panel situated 3.5mm stereo jack input, or the built-in media player.
Speaker connections are positioned on the rear panel and are by way of 4mm binding posts. The outputs are able to drive up to two 8Ohm speakers per channel, delivering a total of 2x 200W. Other connections on the rear facing panel include IEC mains power input, line output via dual RCA (phono) connectors, line 2 input via RCA connectors, and line 1 inputs via RCA or 6.35mm jack connectors. Microphone 1 and 2 inputs are situated on the front facing panel and are via 6.35mm jack connectors. Two rotary controllers offer bass and treble frequency adjustment.
The media player, FM radio, and Bluetooth connections are displayed on a screen with transport buttons including play, rewind/skip back, forward/skip forward, EQ with options of bAS (bass), POP (pop), rOC (rock), JAZ (jazz), CLA (classical), and NOr (normal); REP (repeat) button to set between random, single track, folder, or all tracks; and mode button to switch between frequencies or Bluetooth channels.
Amplifier: Class D. Frequency response: 20Hz to 20kHz, +/-0.5dB. Input sensitivity: 0.775Vrms, line; 0.480Vrms, auxiliary. Input impedance: 20k Ohms, balanced; 10k Ohms, balanced. Dynamic range: 92dB. THD +N: Less than 0.1%. Output power: 2x 100W, 8ohms; 2x 200W, 4ohms. Line output: 2x RCA phono. Power supply: 230Vac, 50Hz. Dimensions (WxDxH): 482 x 260 x 88mm. Weight: 5.21kg
A4 Dual-stereo 200W output
With many of the features of A2, A4's main difference is the dual output capabilities allowing four output channels - two stereo amplifiers. Input connections and controllers are the same as A2, with the exception of dual source selection controllers and dual bass/treble controllers.
Amplifier: Class D. Frequency response: 20Hz to 20kHz, +/-0.5dB. Input sensitivity: 0.775Vrms, line; 0.480Vrms, auxiliary. Input impedance: 20k Ohms, balanced; 10k Ohms, balanced. Dynamic range: 92dB. THD +N: Less than 0.1%. Output power: 4x 100W, 8ohms; 4x 200W, 4ohms. Line output: 4x RCA phono. Power supply: 230Vac, 50Hz. Dimensions (WxDxH): 482 x 260 x 88mm. Weight: 5.98kg
A6 Tri-stereo 200W output
Like A4, A6 has many of the features of A2, however A6 has triple the stereo output capabilities allowing six output channels - three stereo amplifiers. Output connections are via Euroblock terminals to deliver up to 200W per output at 4 Ohms. Input connections and controllers are the same as A2, with the exception of three source selection controllers. A6 does not have bass and treble controls. Adastra A6 also features line outputs for channels 1+2, 3+4, and 5+6.
Amplifier: Class D. Frequency response: 20Hz to 20kHz, +/-0.5dB. Input sensitivity: 0.775Vrms, line; 0.480Vrms, auxiliary. Input impedance: 20k Ohms, balanced; 10k Ohms, balanced. Dynamic range: 92dB. THD +N: Less than 0.1%. Output power: 6x 100W, 8ohms; 6x 200W, 4ohms. Line output: 6x RCA phono. Power supply: 230Vac, 50Hz. Dimensions (WxDxH): 482 x 300 x 88mm. Weight: 8.26kg
A8 Quad-stereo 200W output
Adastra A8 has the same functionality as A6, however it has four independent stereo output channels, four source selection controllers, and eight line output connectors on RCA (phono). A8 does not have bass and treble controllers.
Amplifier: Class D. Frequency response: 20Hz to 20kHz, +/-0.5dB. Input sensitivity: 0.775Vrms, line; 0.480Vrms, auxiliary. Input impedance: 20k Ohms, balanced; 10k Ohms, balanced. Dynamic range: 92dB. THD +N: Less than 0.1%. Output power: 8x 100W, 8ohms; 8x 200W, 4ohms. Line output: 8x RCA phono. Power supply: 230Vac, 50Hz. Dimensions (WxDxH): 482 x 300 x 88mm. Weight: 8.96kg