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 | Woofer  | 
		
| Configuration | Dual  | 
		
| Diameter / length [mm] | 7.87  | 
		
| Width [mm] | 4.09  | 
		
| Thickness [mm] | 5.59  | 
		
| DC resistance [Ohm] | 22  | 
		
| Sensitivity @ 1kHz, 100 mV, in coupler [dB SPL] | 113.5  | 
		
| Vented | No  | 
		
The DTEC Series combines two TEC receiver elements with a single sound port. Case size is equivalent to BK/EF. DTEC provides increased output and reduced vibration compared to a single receiver.
| Product status | Active  | 
		
|---|---|
| Description | Balanced armature receiver  | 
		
| Frequency response curve | Woofer  | 
		
| Configuration | Dual  | 
		
| Diameter / length [mm] | 7.87  | 
		
| Width [mm] | 4.09  | 
		
| Thickness [mm] | 5.59  | 
		
| DC resistance [Ohm] | 22  | 
		
| Sensitivity @ 1kHz, 100 mV, in coupler [dB SPL] | 113.5  | 
		
| Vented | No  | 
		
The DTEC Series combines two TEC receiver elements with a single sound port. Case size is equivalent to BK/EF. DTEC provides increased output and reduced vibration compared to a single receiver.
| Product status | Active  | 
		
|---|---|
| Description | Balanced armature receiver  | 
		
| Frequency response curve | Woofer  | 
		
| Configuration | Dual  | 
		
| Diameter / length [mm] | 7.87  | 
		
| Width [mm] | 4.09  | 
		
| Thickness [mm] | 5.59  | 
		
| DC resistance [Ohm] | 22  | 
		
| Sensitivity @ 1kHz, 100 mV, in coupler [dB SPL] | 113.5  | 
		
| Vented | No  | 
		
The DTEC Series combines two TEC receiver elements with a single sound port. Case size is equivalent to BK/EF. DTEC provides increased output and reduced vibration compared to a single receiver.