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.
When in standby the QX-300A draws less than 0.5W of power, making the QX-300A series both Green Energy Star & ErP 1275/2008/EC compliant. Low-Z (4 -16 Ohm) operation and High-Z (70/100 V) loudspeaker configurations are catered for and adjusted using the onboard auto load sensing technology.
Like all Quest products, the QX-300 Series is made to survive in a tough world.
Australian QC and advanced design engineering mean years of trouble free service in professional applications. The QX-300 Series provides a price/performance ratio that is hard to beat.
|Frequency Response||20-20kHz (+/-0.3dB)|
|Peak Output Current||25A|
|Dynamic Range||112dB (A-weighted)|
|Noise Level||-76dBu (A-weighted)|
|Distortion (1kHz@50W/8Ohm)||0.011% (Stereo) 0.004%
|Maximum Input Level||+24dBu|
|Input Type||Phoenix Balanced Inputs||Dante RJ-45 (AES67 Compatible) with RJ-45 Link|
|Maximum Input Level||+24dBu||0dBFS|
|Front Controls||Volume Adjust, 80Hz HPF Enable, Bridged-Mono Enable, Limiter Enable, Auto-Standby Enable)|
|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|
|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.
Phone: +61 (0) 3 8373 6868Address: 86 Derby Street, Pascoe Vale VIC 3054 Australia
Postal: P.O. Box 1071 Tullamarine VIC 3044 Australia
Feel free to get in touch with your nearest distributor. We’re always happy to hear from people interested in our products and we’re always ready to help you with your next project. You can find your nearest Quest distributor on the map below.
For general enquiries email Quest Directly using the enquiry form below.