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 | Active  | 
		
|---|---|
| Description | Balanced armature receiver  | 
		
| Frequency response curve | Midrange  | 
		
| Configuration | Single  | 
		
| Diameter / length [mm] | 6.3  | 
		
| Width [mm] | 4.29  | 
		
| Thickness [mm] | 2.97  | 
		
| DC resistance [Ohm] | 23  | 
		
| Sensitivity @ 1kHz, 100 mV, in coupler [dB SPL] | 104  | 
		
| Vented | No  | 
		
Knowles' most versatile and most popular receiver, the ED series powers applications ranging from Standard BTE aids and Mini-BTE aids to Full Concha and Half Concha ITE instruments.
| Product status | Active  | 
		
|---|---|
| Description | Balanced armature receiver  | 
		
| Frequency response curve | Midrange  | 
		
| Configuration | Single  | 
		
| Diameter / length [mm] | 6.3  | 
		
| Width [mm] | 4.29  | 
		
| Thickness [mm] | 2.97  | 
		
| DC resistance [Ohm] | 23  | 
		
| Sensitivity @ 1kHz, 100 mV, in coupler [dB SPL] | 104  | 
		
| Vented | No  | 
		
Knowles' most versatile and most popular receiver, the ED series powers applications ranging from Standard BTE aids and Mini-BTE aids to Full Concha and Half Concha ITE instruments.
| Product status | Active  | 
		
|---|---|
| Description | Balanced armature receiver  | 
		
| Frequency response curve | Midrange  | 
		
| Configuration | Single  | 
		
| Diameter / length [mm] | 6.3  | 
		
| Width [mm] | 4.29  | 
		
| Thickness [mm] | 2.97  | 
		
| DC resistance [Ohm] | 23  | 
		
| Sensitivity @ 1kHz, 100 mV, in coupler [dB SPL] | 104  | 
		
| Vented | No  | 
		
Knowles' most versatile and most popular receiver, the ED series powers applications ranging from Standard BTE aids and Mini-BTE aids to Full Concha and Half Concha ITE instruments.