Parts from Knowles, ED Inventory

280 Hz ~ 5 kHz Analog Microphone Electret Condenser Omnidirectional (-87.5dB ±3dB @ 74dB SPL) Wire Leads

Distributor	SKU	Stock	MOQ	1	10	50	100	1,000	10,000
DigiKey	423-1015-ND	258	1	$55.33	$43.13	$36.55	$34.79	$34.79	$34.79

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8 ~ 50pF Trimmer Capacitor 125 V Top Surface Mount

Distributor	SKU	Stock	MOQ	1	10	50	100	1,000	10,000
DigiKey	1674-1007-6-ND	36664		$5.21	$3.78	$3.33	$3.03	$2.64	$2.50

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Distributor	SKU	Stock	MOQ	1	10	50	100	1,000	10,000
DigiKey	423-BF-1859-000-ND	2953		$1.97	$1.61	$1.39	$1.31	$1.07	$1.04

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Distributor	SKU	Stock	MOQ	1	10	50	100	1,000	10,000
DigiKey	423-BF-1859-000-ND	1490	1	$2.37	$1.83	$1.54	$1.43	$1.13	$1.04

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100 Hz ~ 5.5 kHz Analog Microphone Electret Condenser 0.9 V ~ 10 V Omnidirectional (-53dB ±2dB @ 74dB SPL) Solder Pads

Distributor	SKU	Stock	MOQ	1	10	50	100	1,000	10,000
DigiKey	423-1160-ND	347		$24.87	$20.27	$17.59	$16.91	$16.91	$16.91

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Distributor	SKU	Stock	MOQ	1	10	50	100	1,000	10,000
DigiKey	1956-L5994-10-ND	49	1	$9.64	$7.28	$6.19	$5.81	$5.63	$5.63

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100 Hz ~ 10 kHz Analog Microphone Electret Condenser 1.3 V ~ 3 V Omnidirectional (-53dB ±3dB @ 74dB SPL) Wire Leads

Distributor	SKU	Stock	MOQ	1	10	50	100	1,000	10,000
DigiKey	FG-23329-C05-ND	140		$36.79	$29.99	$26.04	$26.01	$26.01	$26.01

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4.5 ~ 20pF Trimmer Capacitor 350 V Top Surface Mount

Distributor	SKU	Stock	MOQ	1	10	50	100	1,000	10,000
DigiKey	1674-1012-6-ND	68673		$4.92	$3.56	$3.01	$2.84	$2.47	$2.47

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1 ~ 16pF Trimmer Capacitor 1000 V Top Surface Mount

Distributor	SKU	Stock	MOQ	1	10	50	100	1,000	10,000
DigiKey	1608-1220-ND	2301		$40.37	$33.71	$32.58	$32.58	$32.58	$32.58

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230 Ohms Receiver, Balanced Armature Speaker 200 Hz ~ 4.4 kHz Side Rectangular

Distributor	SKU	Stock	MOQ	1	10	50	100	1,000	10,000
DigiKey	423-1302-ND	0				$29.73	$29.73	$29.73	$29.73