Q Series Class D Amplifier

Q Series Class D Amplifier

The Beta Three® Q Series is a series of class D professional amplifiers incorporating a DSP core and display, complemented with the convenience of onboard digital signal processing, specially designed for sound reinforcement systems requiring maximum performance and portability. Like other products engineered and manufactured by Beta Three, the Q series is crafted with exceptional quality and long-term durability and reliability.

Q5i - Professional Class D Amplifier
Q5i - Professional Class D Amplifier


Professional Class D Amplifier

The new developed Q series amplifier is the best power solution for professional sound system requiring maximum performance and portability. It is Beta Three evolutional integration of Class D amplification, switching power supply and DSP core in a rugged 2U chassis. With reliable extended power, light weight, smart signal display and advanced protection circuitry, Q series provides unmatched performance at real value. 


  • Housed in a rugged, all-steel 2U chassis.
  • Easy to configure in stereo / mono / bridge modes at the back
  • Switched mode power supply ensures an improved amplifier performance at high output levels
  • High efficient Class D amplification, low weight, low distortion and fast response.
  • Minimum load impedance (stereo / mono): 2Ω
  • Built-in DSP for the most flexible use in live sound or permanently installed sound
  • The simple front panel controls and a LCD screen give you all of your sound’s vital signs at a glance
  • Electronically balanced XLR inputs
  • Touch proof binding post and Speakon output
  • Variable fan speed is automatically adjusted by temperature with front to back air flow to keep amplifier cooling
  • Amplifier protection includes short circuit, overload, excessive temperature, DC on outputs


Rated Power (Stereo 8Ω)

2 x 850W
Rated Power (Stereo 4Ω)2 x 1550W
Rated Power (Stereo 2Ω)2 x 2500W
Rated Power (Bridge 8Ω)3000W
Rated Power (Bridge 4Ω)5000W
THD (@1kHz)<0.5%

IMD (@60Hz/7kHz 4:1)

Amplifier TypeClass D
S/N Ratio>100dB (1kHz, A weight)
Damping Factor>200:1 @ 8ohm/100Hz
Frequency Response20Hz - 20kHz (±0.5dB)
Input Sensitivity1Vrms
Crosstalk Attenuation (@1kHz)>55dB
CH Gain Difference (@1kHz)<0.25dB
Static Power Consumption45W ±10%
Input connector2 x XLR
Output Connector2 x XLR + 2 x NL4 + 2 x Binding post
Power SupplyAC 220-230V 50Hz/60Hz
Coolingairflow from front to back
Packing Dimension (W x D x H)580mm x 570mm x 150mm
Net Weight8.5kg
Gross Weight9.5kg

Q5i Application

    Q5i Installation

      Q5i Parts

        Q5i Cases

          Q5i Collocation



              Q5iβ3 Q5i Datasheet 1.0Q5i  200KB 2022-07-05 21:43:58
              β3_Q7i_Q5i_Q3i_Professional_Amplifier_English_Manualβ3_Q7i_Q5i_Q3i_Professional_Amplifier_English_Manual 1β3_Q7i_Q5i_Q3i_Professional_Amplifier_English_Manual  24103.33KB 2018-07-12 02:25:39