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Power Supply Line Noise Suppression for Home Audio

Digital amplifiers are increasingly popular for home audio applications. In many cases, power is supplied from an AC outlet for home audio, and the conductive noise in the power supply cable is regulated under EMC standards. Therefore, it is necessary to prevent noise from leaking into the power supply line during audio playback. Here is an overview of noise problems in home audio cables and their solutions.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.
Ferrite Beads 22 OHM Alternate Sizing Guide Below BLM18SD220SN1D Murata Electronics 1: $0.17 31,769In Stock 96,000On Order	Mfr. Part No. BLM18SD220SN1D Mouser Part No 81-BLM18SD220SN1D	Murata Electronics	Ferrite Beads 22 OHM Alternate Sizing Guide Below Learn More about Murata Electronics murata blm emi filter	Datasheet	31,769In Stock 96,000On Order On Order Ship Dates Mfr. No: BLM18SD220SN1D Stock: 31,769 Can Dispatch Immediately On Order: 40,000 Expected 02/10/2026 56,000 Expected 26/10/2026 Factory Lead Time: 12 Weeks	Cut Tape $0.17 $0.123 $0.107 $0.096 View Reel $0.045 $0.085 $0.073 $0.065 $0.057 $0.045 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
Ferrite Beads FB SMD 0603inch 220o hm NONAUTO Alternate Sizing Guide Below BLM18SP221SN1D Murata Electronics 1: $0.27 6,375In Stock 8,000Expected 04/12/2026	Mfr. Part No. BLM18SP221SN1D Mouser Part No 81-BLM18SP221SN1D	Murata Electronics	Ferrite Beads FB SMD 0603inch 220o hm NONAUTO Alternate Sizing Guide Below Learn More about Murata Electronics murata blm emi filter	Datasheet	6,375In Stock 8,000Expected 04/12/2026	Cut Tape $0.27 $0.186 $0.162 $0.145 View Reel $0.062 $0.129 $0.111 $0.098 $0.086 $0.062 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
Ferrite Beads 70 OHM Alternate Sizing Guide Below BLM21SP700SN1D Murata Electronics 1: $0.31 2,857In Stock 20,000On Order	Mfr. Part No. BLM21SP700SN1D Mouser Part No 81-BLM21SP700SN1D	Murata Electronics	Ferrite Beads 70 OHM Alternate Sizing Guide Below Learn More about Murata Electronics murata blm emi filter	Datasheet	2,857In Stock 20,000On Order On Order Ship Dates Mfr. No: BLM21SP700SN1D Stock: 2,857 Can Dispatch Immediately On Order: 8,000 Expected 01/12/2026 12,000 Expected 21/01/2027 Factory Lead Time: 12 Weeks	Cut Tape $0.31 $0.218 $0.19 $0.17 View Reel $0.075 $0.156 $0.134 $0.118 $0.10 $0.075 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
EMI Filter Circuits 6.3 V 15A BNX029-01L Murata Electronics 1: $6.43 278In Stock 6,000On Order	Mfr. Part No. BNX029-01L Mouser Part No 81-BNX029-01L	Murata Electronics	EMI Filter Circuits 6.3 V 15A Learn More about Murata Electronics murata bnx series	Datasheet	278In Stock 6,000On Order On Order Ship Dates Mfr. No: BNX029-01L Stock: 278 Can Dispatch Immediately On Order: 1,600 Expected 03/03/2028 4,400 Expected 06/03/2028 Factory Lead Time: 12 Weeks	Cut Tape $6.43 $5.25 $4.84 $4.55 Reel $3.46 View $4.28 $3.68 $3.20 MouseReel Available	Min.: 1 Mult.: 1 : 400
Ferrite Beads 1000 OHM Alternate Sizing Guide Below BLM18SP102SN1D Murata Electronics 1: $0.25 605In Stock 48,000On Order	Mfr. Part No. BLM18SP102SN1D Mouser Part No 81-BLM18SP102SN1D	Murata Electronics	Ferrite Beads 1000 OHM Alternate Sizing Guide Below Learn More about Murata Electronics murata blm emi filter	Datasheet	605In Stock 48,000On Order On Order Ship Dates Mfr. No: BLM18SP102SN1D Stock: 605 Can Dispatch Immediately On Order: 28,000 Expected 02/10/2026 20,000 Expected 01/02/2027 Factory Lead Time: 14 Weeks	Cut Tape $0.25 $0.176 $0.153 $0.137 View Reel $0.059 $0.123 $0.105 $0.093 $0.081 $0.059 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
Ferrite Beads 600 OHM Alternate Sizing Guide Below BLM18SP601SN1D Murata Electronics 1: $0.27 2,484In Stock 88,000On Order	Mfr. Part No. BLM18SP601SN1D Mouser Part No 81-BLM18SP601SN1D	Murata Electronics	Ferrite Beads 600 OHM Alternate Sizing Guide Below Learn More about Murata Electronics murata blm emi filter	Datasheet	2,484In Stock 88,000On Order On Order Ship Dates Mfr. No: BLM18SP601SN1D Stock: 2,484 Can Dispatch Immediately On Order: 16,000 Expected 27/10/2026 28,000 Expected 05/11/2026 44,000 Expected 14/12/2026 Factory Lead Time: 13 Weeks	Cut Tape $0.27 $0.186 $0.162 $0.145 View Reel $0.058 $0.129 $0.111 $0.098 $0.086 $0.058 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
Ferrite Beads 110 OHM Alternate Sizing Guide Below BLM21SP111SN1D Murata Electronics 1: $0.31 15,600In Stock 216,000On Order	Mfr. Part No. BLM21SP111SN1D Mouser Part No 81-BLM21SP111SN1D	Murata Electronics	Ferrite Beads 110 OHM Alternate Sizing Guide Below Learn More about Murata Electronics murata blm emi filter	Datasheet	15,600In Stock 216,000On Order On Order Ship Dates Mfr. No: BLM21SP111SN1D Stock: 15,600 Can Dispatch Immediately On Order: 140,000 Expected 29/12/2026 76,000 Expected 08/02/2027 Factory Lead Time: 25 Weeks	Cut Tape $0.31 $0.218 $0.19 $0.17 View Reel $0.076 $0.151 $0.129 $0.114 $0.076 $0.076 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
EMI Filter Circuits 10.0 UF 25V 20A BNX025H01L Murata Electronics 1: $6.07 10In Stock 28,390On Order	Mfr. Part No. BNX025H01L Mouser Part No 81-BNX025H01L	Murata Electronics	EMI Filter Circuits 10.0 UF 25V 20A Learn More about Murata Electronics murata bnx series	Datasheet	10In Stock 28,390On Order On Order Ship Dates Mfr. No: BNX025H01L Stock: 10 Can Dispatch Immediately On Order: 6,390 Expected 23/10/2026 10,000 Expected 15/12/2026 12,000 Expected 06/03/2028 Factory Lead Time: 17 Weeks	Cut Tape $6.07 $4.95 $4.57 $4.30 Reel $3.27 View $4.04 $3.48 $3.02 MouseReel Available	Min.: 1 Mult.: 1 : 400
EMI Filter Circuits 16 V 15A BNX028-01L Murata Electronics 1: $6.07 215In Stock 12,800On Order	Mfr. Part No. BNX028-01L Mouser Part No 81-BNX028-01L	Murata Electronics	EMI Filter Circuits 16 V 15A Learn More about Murata Electronics murata bnx series	Datasheet	215In Stock 12,800On Order On Order Ship Dates Mfr. No: BNX028-01L Stock: 215 Can Dispatch Immediately On Order: 3,200 Expected 26/10/2026 3,200 Expected 03/03/2028 6,400 Expected 06/03/2028 Factory Lead Time: 13 Weeks	Cut Tape $6.07 $4.95 $4.57 $4.30 Reel $3.46 View $4.04 $3.51 $3.20 MouseReel Available	Min.: 1 Mult.: 1 : 400
Ferrite Beads 1000 OHM 2A Alternate Sizing Guide Below BLM31KN102SN1L Murata Electronics 1: $0.39 6In Stock 187,500On Order	Mfr. Part No. BLM31KN102SN1L Mouser Part No 81-BLM31KN102SN1L	Murata Electronics	Ferrite Beads 1000 OHM 2A Alternate Sizing Guide Below Learn More about Murata Electronics murata blm31kn	Datasheet	6In Stock 187,500On Order On Order Ship Dates Mfr. No: BLM31KN102SN1L Stock: 6 Can Dispatch Immediately On Order: 87,500 Expected 26/10/2026 100,000 Expected 07/12/2026 Factory Lead Time: 15 Weeks	Cut Tape $0.39 $0.277 $0.238 $0.213 Reel $0.097 View $0.19 $0.145 $0.127 $0.097 $0.096 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
Ferrite Beads Chip Ferrite 0805, 4mOhms Res, 30Ohms Imp, 8.5A BLM21SN300SN1D Murata Electronics 1: $0.21 278,778On Order	Mfr. Part No. BLM21SN300SN1D Mouser Part No 81-BLM21SN300SN1D	Murata Electronics	Ferrite Beads Chip Ferrite 0805, 4mOhms Res, 30Ohms Imp, 8.5A Learn More about Murata Electronics murata blm sn ferrite beads	Datasheet	278,778On Order On Order Ship Dates Mfr. No: BLM21SN300SN1D Stock: 0 On Order: 98,778 Expected 09/10/2026 180,000 Expected 07/12/2026 Factory Lead Time: 14 Weeks	Cut Tape $0.21 $0.147 $0.128 $0.115 View Reel $0.048 $0.103 $0.086 $0.077 $0.068 $0.048 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
Ferrite Beads 270 OHM 4.5A Alternate Sizing Guide Below BLM31KN271SN1L Murata Electronics 1: $0.38 296,956On Order	Mfr. Part No. BLM31KN271SN1L Mouser Part No 81-BLM31KN271SN1L	Murata Electronics	Ferrite Beads 270 OHM 4.5A Alternate Sizing Guide Below Learn More about Murata Electronics murata blm31kn	Datasheet	296,956On Order On Order Ship Dates Mfr. No: BLM31KN271SN1L Stock: 0 On Order: 64,456 Expected 04/01/2027 232,500 TBD Factory Lead Time: 20 Weeks	Cut Tape $0.38 $0.269 $0.234 $0.209 Reel $0.097 View $0.186 $0.158 $0.139 $0.097 $0.096 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
Ferrite Beads 470 OHM Alternate Sizing Guide Below BLM31KN471SN1L Murata Electronics 1: $0.38 265,898On Order	Mfr. Part No. BLM31KN471SN1L Mouser Part No 81-BLM31KN471SN1L	Murata Electronics	Ferrite Beads 470 OHM Alternate Sizing Guide Below Learn More about Murata Electronics murata blm31kn	Datasheet	265,898On Order On Order Ship Dates Mfr. No: BLM31KN471SN1L Stock: 0 On Order: 65,898 Expected 02/11/2026 125,000 Expected 21/12/2026 75,000 Expected 04/01/2027 Factory Lead Time: 19 Weeks	Cut Tape $0.38 $0.269 $0.234 $0.209 Reel $0.097 View $0.186 $0.158 $0.139 $0.097 $0.096 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
Ferrite Beads 330 OHM 25% Alternate Sizing Guide Below BLM18KG331SN1D Murata Electronics 1: $0.14 213,500On Order	Mfr. Part No. BLM18KG331SN1D Mouser Part No 81-BLM18KG331SN1D	Murata Electronics	Ferrite Beads 330 OHM 25% Alternate Sizing Guide Below Learn More about Murata Electronics murata blm18kg ferrite beads	Datasheet	213,500On Order	Cut Tape $0.14 $0.066 $0.057 $0.046 View Reel $0.023 $0.04 $0.035 $0.032 $0.023 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
Ferrite Beads 33 OHM Alternate Sizing Guide Below BLM18SG330SN1D Murata Electronics 1: $0.19 87,232On Order	Mfr. Part No. BLM18SG330SN1D Mouser Part No 81-BLM18SG330SN1D	Murata Electronics	Ferrite Beads 33 OHM Alternate Sizing Guide Below Learn More about Murata Electronics murata blm emi filter	Datasheet	87,232On Order On Order Ship Dates Mfr. No: BLM18SG330SN1D Stock: 0 On Order: 47,232 Expected 24/11/2026 40,000 Expected 18/01/2027 Factory Lead Time: 19 Weeks	Cut Tape $0.19 $0.134 $0.116 $0.104 View Reel $0.045 $0.093 $0.08 $0.071 $0.062 $0.045 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
Ferrite Beads 180 OHM 25% BLM21SP181SN1D Murata Electronics 1: $0.31 132,000Expected 04/01/2027	Mfr. Part No. BLM21SP181SN1D Mouser Part No 81-BLM21SP181SN1D	Murata Electronics	Ferrite Beads 180 OHM 25% Learn More about Murata Electronics murata blm emi filter	Datasheet	132,000Expected 04/01/2027	Cut Tape $0.31 $0.216 $0.19 $0.17 View Reel $0.075 $0.151 $0.129 $0.114 $0.076 $0.075 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
Ferrite Beads 120 OHM Alternate Sizing Guide Below BLM31KN121SN1L Murata Electronics 1: $0.38 102,590On Order	Mfr. Part No. BLM31KN121SN1L Mouser Part No 81-BLM31KN121SN1L	Murata Electronics	Ferrite Beads 120 OHM Alternate Sizing Guide Below Learn More about Murata Electronics murata blm31kn	Datasheet	102,590On Order On Order Ship Dates Mfr. No: BLM31KN121SN1L Stock: 0 On Order: 90 Expected 26/11/2026 102,500 TBD Factory Lead Time: 19 Weeks	Cut Tape $0.38 $0.269 $0.234 $0.209 Reel $0.097 View $0.186 $0.158 $0.139 $0.097 $0.096 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
Ferrite Beads 600 OHM Alternate Sizing Guide Below BLM31KN601SN1L Murata Electronics 1: $0.40 109,401On Order	Mfr. Part No. BLM31KN601SN1L Mouser Part No 81-BLM31KN601SN1L	Murata Electronics	Ferrite Beads 600 OHM Alternate Sizing Guide Below Learn More about Murata Electronics murata blm31kn	Datasheet	109,401On Order On Order Ship Dates Mfr. No: BLM31KN601SN1L Stock: 0 On Order: 46,901 Expected 11/11/2026 25,000 Expected 08/01/2027 37,500 TBD Factory Lead Time: 33 Weeks	Cut Tape $0.40 $0.277 $0.241 $0.215 View Reel $0.105 $0.192 $0.164 $0.145 $0.105 $0.105 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
Ferrite Beads 800 OHM 2.5A Alternate Sizing Guide Below BLM31KN801SN1L Murata Electronics 1: $0.38 77,612On Order	Mfr. Part No. BLM31KN801SN1L Mouser Part No 81-BLM31KN801SN1L	Murata Electronics	Ferrite Beads 800 OHM 2.5A Alternate Sizing Guide Below Learn More about Murata Electronics murata blm31kn	Datasheet	77,612On Order On Order Ship Dates Mfr. No: BLM31KN801SN1L Stock: 0 On Order: 112 Expected 06/10/2026 25,000 Expected 25/11/2026 52,500 Expected 30/12/2026 Factory Lead Time: 16 Weeks	Cut Tape $0.38 $0.269 $0.234 $0.209 Reel $0.097 View $0.186 $0.158 $0.134 $0.097 $0.096 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
Ferrite Beads 30 OHM Alternate Sizing Guide Below BLM15KD300SN1D Murata Electronics 1: $0.10 59,500On Order	Mfr. Part No. BLM15KD300SN1D Mouser Part No 81-BLM15KD300SN1D	Murata Electronics	Ferrite Beads 30 OHM Alternate Sizing Guide Below Learn More about Murata Electronics murata blm emi filter	Datasheet	59,500On Order On Order Ship Dates Mfr. No: BLM15KD300SN1D Stock: 0 On Order: 19,500 Expected 06/10/2026 40,000 Expected 09/10/2026 Factory Lead Time: 32 Weeks	Cut Tape $0.10 $0.06 $0.05 $0.042 View Reel $0.02 $0.036 $0.032 $0.029 $0.023 $0.02 MouseReel Available	Min.: 1 Mult.: 1 : 10,000
Ferrite Beads BLM02KX100SN1D Murata Electronics 15,000: $0.064 Non-Stocked Lead-Time 4 Weeks	Mfr. Part No. BLM02KX100SN1D Mouser Part No 81-BLM02KX100SN1D	Murata Electronics	Ferrite Beads Learn More about Murata Electronics murata blm emi filter	Datasheet	Non-Stocked Lead-Time 4 Weeks	Reel $0.064	Min.: 15,000 Mult.: 15,000 : 15,000

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