> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# PA Amplifier Stereo 2x250W

**Type:** Product page · **SKU:** AA4164
**Page:** https://core-electronics.com.au/pa-amplifier-stereo-2x250w.html ([markdown](https://core-electronics.com.au/pa-amplifier-stereo-2x250w.html.md))

## Retired product

This product is retired and no longer available for purchase. Search the catalogue for an alternative.

## How to buy

- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

The Q series amplifiers are designed to be installed in the most demanding of commercial audio applications such as pub PAs, nightclubs, mobile DJs, cinemas and sporting venues. They are uniquely contemporary in appearance and offer high fidelity performance as individual stand alone amplifiers or stereo amplifiers. Each channel is powered by an independent power supply with high efficiency toroidal transformer. They can be configured to operate in bridge mode (mono) providing up to a massive 1200W RMS power to an 8 ohm load (A 4170). They will provide full rated power at less than 0.1% total harmonic distortion. 
The design incorporates a thermally cued fan forced cooling system. 
The protection circuitry employed in the design ensures the integrity of the amplifiers under overload conditions. The circuit even protects itself when a total short circuit is applied across the output terminals. The 'soft start' limiter will immediately shut down the output drive in overload or short circuit conditions, then will gradually restart when the fault condition has been removed. 
Each channel includes its own recessed front mounted volume control and rear panel mounted XLR & 6.35mm phono jack balanced inputs with selectable sensitivities of 0.77V, 1.4V and 3.5V. This allows input signals from a wide variety of source equipment. Output connections are made via heavy duty binding posts or industry standard heavy duty speaker connectors. 
 
**Picture for illustration purposes, A 4164 model number is Q250**

#### Features

- Rugged heavy duty construction
- 19" rack mount
- Stylish cosmetics
- 3 modes of operation - stereo, parallel and bridged
- Selectable input sensitivity
- Independent power supplies for each channel
- Soft start limiter
- Earth lift switch
- Limiter on/off switch
- XLR & 6.35mm balanced inputs
- Binding post & industry standard heavy duty output speaker connectors
- Front & rear carry handles
- Clipping & overload/overdrive protect indicators
- Recessed detent volume controls for each channel
- Thermally cued fan forced cooling
- 2 Year Warranty

**Specifications**

- Output Power 8 Ω: 2x250W RMS
- Output Power 4 Ω: 2x400W RMS
- Output Power Bridged 8 Ω: 650W RMS
- Frequency Response: 10Hz - 50KHz -1.5db
- Imput Sensitivity: 0.77, 1.4, 3.5V
- Signal to Noise Ration: >95dB
- Dimensions(WxDxH): 482x460x88
- Weight: 16kg
- 
- \*Specifications subject to change without notice

**Downloads**

- Instruction Manual
- Circuit Diagram

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/p/a/pa_amplifier_stereo_2x250w__a4164__00.jpg)