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The QX-300 series amplifiers take commercial audio to a new level. The superior Class-D technology combined with small form factor make the QX-300 series the perfect solution for any commercial or industrial application. Wall and table mount options offer more flexibility, 10 units can be mounted in 3RU, achieving extremely high power to channel count for density.
UMAC™ Class-D technology delivers unequalled audiophile specifications, including the highest dynamic range and the lowest distortion performance of any comparable pro audio amplifier. This makes the QX-300 Series suitable for pro audio applications and for use in Hi-Fi and AV products.
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| Frequency Response | 20-20kHz (+/-0.3dB) | |
| Peak Output Current | 25A | |
| Dynamic Range | 112dB (A-weighted) | |
| Noise Level | -76dBu (A-weighted) | |
| Distortion (1kHz@1W/8Ohm) | 0.003% | |
| Distortion (1kHz@50W/8Ohm) | 0.011% (Stereo) 0.004% (Bridged-Mono) | |
| Crosstalk (1kHz@1W/8Ohm) | -95dB | |
| Gain | 26dB/32dB | |
| Maximum Input Level | +24dBu | |
| Amplifier Version | QX-300A | QX-300D |
| Input Type | Phoenix Balanced Inputs | Dante RJ-45 (AES67 Compatible) with RJ-45 Link |
| Input Sensitivity | +7dBu/+4dBu | -4.5dBFS/-1.5dBFS |
| Input Impedance | 10kOhm | - |
| Maximum Input Level | +24dBu | 0dBFS |
| Output Resistance | 22.5mOhm/43.6mOhm | |
| Front Controls | Volume Adjust, 80Hz HPF Enable, Bridged-Mono Enable, Limiter Enable, Auto-Standby Enable) | |
| Indicators (LEDs) | Blue/Orange | Active/Standby |
| Orange | Protection | |
| Green | Signal Detection | |
| Orange/Red | Limiter/Clip | |
| Cooling | Fan cooled, temperature dependent | |
| Features | Wake On Music, Auto-Mute (1ms wake-up), Limiting on High Temperature | |
| Amplifier Protection Systems | Thermal protection, Over- Current Protection, DC Protection, HF Protection | |
| Mains Input Voltage Range | 85VAC - 265VAC | |
| Amplifier Version | QX-300A | QX-300D |
| Standby Power Consumption | 0.4W | 2.5W |
| Muted Power Consumption | 4.2W | 6.5W |
| Idle Power Consumption | 7.2W | 9.5W |
| Standard Power Consumption (Pink Noise@ 1/8th Rated Power, 8Ohm) | 28W | 30W |
| Mains Connector | Standard IEC C14 | |
| Dimensions (H x W x D) | 44.5 x 140 x 330 mm (1.75 x 5.5 x 13") | |
| Weight | 1.6kg (3.5 lbs) | |
| Accessories | Mains Cable, Feet, User Manual, Phoenix Plugs, Rack Ears |
| OPERATION MODES | Stereo Mode | Bridged-Mono Mode | ||||
| LOAD | 8Ohm | 4Ohm | 8Ohm | 4Ohm | 70V (22Ohm) | 100V (33Ohm) |
| MAXIMUM CONTINUOUS POWER (@1KHZ, 1% THD) | 2 x 140W | 2 x 140W | 1 x 280W | 1 x 260W | 250W | 240W |
| MAXIMUM DYNAMIC POWER(@1KHZ, 1% THD) | 2 x 200W | 2 x 275W | 1 x 550W | 1 x 550W | 550W | 550W |
* All specifications were measured at 240VAC
** Quest Engineering reserves the right to make changes in specifications, or products without prior notice.
*** The figures shown above are ‘real world', usable specifications and are conservative as a result. Quest Engineering does not believe in portraying misleading or exaggerated specifications.
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RETURNS POLICY
To return goods we have delivered to you, please contact us within 30 days from the date you have received the item. A staff member will then assist you with any return or repair. This may include inspecting the goods, arranging for the goods to be sent for repair, or providing you with a replacement.
Incorrectly Ordered/Change Of Mind:
Refunds are not normally provided where you have simply changed your mind or found the goods cheaper elsewhere. However, if goods have been incorrectly ordered, at our discretion, customers may be credited less a restocking fee.
A change of mind return will only be accepted if:
Please note: For change of mind returns, the shipping cost and method is the customer's responsibility. We will not compensate any returns that are lost or damaged in transit to us. For some change of mind returns, a restocking fee may apply.
Faulty Items
We recommend you immediately inspect any goods that we deliver to you or that you collect from our store to ensure you are completely satisfied with the goods. If any goods arrive damaged, please contact us as soon as possible. We will arrange to have the damaged goods returned and either arrange for a replacement of the goods or refund. Replacements and refunds of new products that are damaged on delivery or faulty from new requires a proof of purchase of the product and be returned with all original packaging, accessories and/or manuals included. Refunds will be made via the method of payment you used to make your purchase. If we consider the goods to have breached a consumer guarantee, any shipping costs to return the goods to us will be at our cost and compensated.
Repairs
The product must be returned with proof of purchase, it must not be modified or mistreated in any way and it must not have been serviced elsewhere. Goods returned for repair will be assessed and/or repaired within a reasonable time. You may be required to pay labour, assessment and/or freight fees, such as where goods are assessed to have been damaged by misuse or accident. We may provide you with an approximate fee; this may vary due to reasons beyond our control. In some circumstances, goods presented for repair may be replaced by refurbished goods of the same type rather than being repaired. Refurbished parts may be used to repair the goods.
Estimated Delivery Time Frame: 4-8 business days
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