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 | Full range  | 
		
| Configuration | Multiway  | 
		
| Diameter / length [mm] | 5.16  | 
		
| Width [mm] | 2.96  | 
		
| Thickness [mm] | 4.51  | 
		
| DC resistance [Ohm] | 22  | 
		
| Sensitivity @ 1kHz, 100 mV, in coupler [dB SPL] | 103  | 
		
| Vented | No  | 
		
Two-Way Driver
Exceedingly small two-way driver for premium sound in true wireless earphones. Excellent treble extension supports HD audio. Warm bass. RoHS compliant
| Product status | Preferred  | 
		
|---|---|
| Description | Balanced armature receiver  | 
		
| Frequency response curve | Full range  | 
		
| Configuration | Multiway  | 
		
| Diameter / length [mm] | 5.16  | 
		
| Width [mm] | 2.96  | 
		
| Thickness [mm] | 4.51  | 
		
| DC resistance [Ohm] | 22  | 
		
| Sensitivity @ 1kHz, 100 mV, in coupler [dB SPL] | 103  | 
		
| Vented | No  | 
		
Two-Way Driver
Exceedingly small two-way driver for premium sound in true wireless earphones. Excellent treble extension supports HD audio. Warm bass. RoHS compliant
| Product status | Preferred  | 
		
|---|---|
| Description | Balanced armature receiver  | 
		
| Frequency response curve | Full range  | 
		
| Configuration | Multiway  | 
		
| Diameter / length [mm] | 5.16  | 
		
| Width [mm] | 2.96  | 
		
| Thickness [mm] | 4.51  | 
		
| DC resistance [Ohm] | 22  | 
		
| Sensitivity @ 1kHz, 100 mV, in coupler [dB SPL] | 103  | 
		
| Vented | No  | 
		
Two-Way Driver
Exceedingly small two-way driver for premium sound in true wireless earphones. Excellent treble extension supports HD audio. Warm bass. RoHS compliant