Knowles is the originator of balanced armature technology which they apply to their receiver, specialty transducers and hearing aid products. Knowles is also a market-leading manufacturer of MEMS microphones, electret microphones, voice processors and acoustical component accessories.
| Product status | Preferred  | 
		
|---|---|
| Description | Balanced armature receiver  | 
		
| Frequency response curve | Woofer – Midrange Dual diaphgram  | 
		
| Configuration | Dual diaphgram  | 
		
| Diameter / length [mm] | 5.3  | 
		
| Width [mm] | 3.1  | 
		
| Thickness [mm] | 3.3  | 
		
| DC resistance [Ohm] | 22.5  | 
		
| Sensitivity @ 1kHz, 100 mV, in coupler [dB SPL] | 111  | 
		
| Vented | Yes  | 
		
Full-Range Driver, High-Output
Proprietary dual diaphragm delivers best-in-class output / size ratio.
Woofer / midrange with low THD in multi-driver IEMs.
Full-range with high output in TWS & single-driver earphones.
| Product status | Preferred  | 
		
|---|---|
| Description | Balanced armature receiver  | 
		
| Frequency response curve | Woofer – Midrange Dual diaphgram  | 
		
| Configuration | Dual diaphgram  | 
		
| Diameter / length [mm] | 5.3  | 
		
| Width [mm] | 3.1  | 
		
| Thickness [mm] | 3.3  | 
		
| DC resistance [Ohm] | 22.5  | 
		
| Sensitivity @ 1kHz, 100 mV, in coupler [dB SPL] | 111  | 
		
| Vented | Yes  | 
		
Full-Range Driver, High-Output
Proprietary dual diaphragm delivers best-in-class output / size ratio.
Woofer / midrange with low THD in multi-driver IEMs.
Full-range with high output in TWS & single-driver earphones.
| Product status | Preferred  | 
		
|---|---|
| Description | Balanced armature receiver  | 
		
| Frequency response curve | Woofer – Midrange Dual diaphgram  | 
		
| Configuration | Dual diaphgram  | 
		
| Diameter / length [mm] | 5.3  | 
		
| Width [mm] | 3.1  | 
		
| Thickness [mm] | 3.3  | 
		
| DC resistance [Ohm] | 22.5  | 
		
| Sensitivity @ 1kHz, 100 mV, in coupler [dB SPL] | 111  | 
		
| Vented | Yes  | 
		
Full-Range Driver, High-Output
Proprietary dual diaphragm delivers best-in-class output / size ratio.
Woofer / midrange with low THD in multi-driver IEMs.
Full-range with high output in TWS & single-driver earphones.