QPAD QH-90 Review

👤by Tony Le Bourne Comments 📅18-04-13
Specification & Features
QH-90 Technical Specifications

Transducer type: Dynamic 53mm
Operating principle: Closed
Frequency response: 15Hz-25KHz
Nominal impedance: 60 ohm per system
Nominal SPL: 983dB
T.H.D: < 2%
Power handling capacity: 150mW
Sound coupling to the ear: Circumaural
Ambient noise attenuation: approx.20 dBA
Headband pressure: 5 N
Weight with microphone and cable: 350g
Cable length and type: 1m + 2m extension + 10cm iphone
Connection: Mini stereo jack plug(3.5MM)

Transducer type: Condenser(back electret)
Operating principle: Pressure gradient
Polar Pattern: Cardioid
Power supply: AB powering
Supply voltage: 2V
Current consumption: Max 0.5 mA
Nominal impedance: &#8804;2.2 k&#937; 30%
Open circuit voltage at f = 1 kHz 20 mV / Pa
Frequency response: 100 - 12,000 Hz
T.H.D: 2% at f = 1 kHz
Max. SPL: 105dB SPL (THD &#8804; 1.0% at 1KHz)
Microphone output: -393dB
Dimensions: 6*5mm
Length mic boom: 150MM(include gooseneck)
Capsule diameter: 6mm

- Hi-fi capable 53mm drivers for supreme audio quality
- 15-25.000 Hz frequency response
- Detachable microphone (quick and easy to plug/unplug for music-only purposes)
- Solid aluminum construction for durability and stability
- Super-soft padded leather headband and velour padding on cups for maximum comfort
- Closed cup design on QH-90 for enhanced bass-reproduction and sound leakage

6 pages 1 2 3 4 5 6