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 | Full range  | 
		
| Configuration | Single  | 
		
| Diameter / length [mm] | 5.32  | 
		
| Width [mm] | 3.06  | 
		
| Thickness [mm] | 2.69  | 
		
| DC resistance [Ohm] | 25  | 
		
| Sensitivity @ 1kHz, 100 mV, in coupler [dB SPL] | 105  | 
		
| Vented | Yes  | 
		
Following a recently proposed ruling from the U.S. Food and Drug Administration, the over-the-counter (OTC) hearing devices are intended to broaden access to hearing aid technology for millions of Americans. Knowles’ RAQ receiver is well-positioned to serve this expanding market opportunity.
| Product status | Active  | 
		
|---|---|
| Description | Balanced armature receiver  | 
		
| Frequency response curve | Full range  | 
		
| Configuration | Single  | 
		
| Diameter / length [mm] | 5.32  | 
		
| Width [mm] | 3.06  | 
		
| Thickness [mm] | 2.69  | 
		
| DC resistance [Ohm] | 25  | 
		
| Sensitivity @ 1kHz, 100 mV, in coupler [dB SPL] | 105  | 
		
| Vented | Yes  | 
		
Following a recently proposed ruling from the U.S. Food and Drug Administration, the over-the-counter (OTC) hearing devices are intended to broaden access to hearing aid technology for millions of Americans. Knowles’ RAQ receiver is well-positioned to serve this expanding market opportunity.
| Product status | Active  | 
		
|---|---|
| Description | Balanced armature receiver  | 
		
| Frequency response curve | Full range  | 
		
| Configuration | Single  | 
		
| Diameter / length [mm] | 5.32  | 
		
| Width [mm] | 3.06  | 
		
| Thickness [mm] | 2.69  | 
		
| DC resistance [Ohm] | 25  | 
		
| Sensitivity @ 1kHz, 100 mV, in coupler [dB SPL] | 105  | 
		
| Vented | Yes  | 
		
Following a recently proposed ruling from the U.S. Food and Drug Administration, the over-the-counter (OTC) hearing devices are intended to broaden access to hearing aid technology for millions of Americans. Knowles’ RAQ receiver is well-positioned to serve this expanding market opportunity.