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 | Tweeter  | 
		
| Configuration | Quad  | 
		
| Diameter / length [mm] | 5.8  | 
		
| Width [mm] | 5.11  | 
		
| Thickness [mm] | 4.14  | 
		
| DC resistance [Ohm] | 3.1  | 
		
| Sensitivity @ 1kHz, 100 mV, in coupler [dB SPL] | 88  | 
		
| Vented | No  | 
		
Quad version of the Supertweeter
Best in class treble performance for audiophile & professional in-ear monitors
Supports Hi-Res Audio Wireless for TWS earphones
Easy to drive; no transformer or high voltage amplifier required
Higher treble output in a fraction of the volume of electrostatic tweeters
RoHS compliant
| Product status | Preferred  | 
		
|---|---|
| Description | Balanced armature receiver  | 
		
| Frequency response curve | Tweeter  | 
		
| Configuration | Quad  | 
		
| Diameter / length [mm] | 5.8  | 
		
| Width [mm] | 5.11  | 
		
| Thickness [mm] | 4.14  | 
		
| DC resistance [Ohm] | 3.1  | 
		
| Sensitivity @ 1kHz, 100 mV, in coupler [dB SPL] | 88  | 
		
| Vented | No  | 
		
Quad version of the Supertweeter
Best in class treble performance for audiophile & professional in-ear monitors
Supports Hi-Res Audio Wireless for TWS earphones
Easy to drive; no transformer or high voltage amplifier required
Higher treble output in a fraction of the volume of electrostatic tweeters
RoHS compliant
| Product status | Preferred  | 
		
|---|---|
| Description | Balanced armature receiver  | 
		
| Frequency response curve | Tweeter  | 
		
| Configuration | Quad  | 
		
| Diameter / length [mm] | 5.8  | 
		
| Width [mm] | 5.11  | 
		
| Thickness [mm] | 4.14  | 
		
| DC resistance [Ohm] | 3.1  | 
		
| Sensitivity @ 1kHz, 100 mV, in coupler [dB SPL] | 88  | 
		
| Vented | No  | 
		
Quad version of the Supertweeter
Best in class treble performance for audiophile & professional in-ear monitors
Supports Hi-Res Audio Wireless for TWS earphones
Easy to drive; no transformer or high voltage amplifier required
Higher treble output in a fraction of the volume of electrostatic tweeters
RoHS compliant