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QtyDescriptionMfg Part NumberMfgReferenceUnit(SGD$)ExtMouser Part NumberQtyNotesFarnell Worldwide Options
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2Rectifier Diode DO-41/DO-204 >= 100V >= 1 Amp1N4002-E3/73VishayD3, D40.400.80625-1N4002-E3/732Any 1N4002 in DO-41 or DO-204AL packageSame as Mfg Part Number
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4Schottky Diode DO-41/DO-204 >= 30V >= 1 Amp1N5818ST MicroD1, D2, D5, D60.200.80511-1N5818 4Any 1N5818 in DO-41 or DO-204AL packageSame as Mfg Part Number
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1High Efficiency Red Right Angle LED IndicatorMV5764.MP4BEverlightD70.500.50638-MV5764.MP4B 1MV5364MP4A (yellow), Avago HLMP-1301 see docs before using a different LEDAvago HLMP-1301 bend to fit
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1P Ch MOSFET Vgs > 24V Vds > 25V Rds < 0.5 ohms IPAK GDSFQU11P06TUFairchildQ10.900.90512-FQU11P06TU1Fairchild FQU17P06TU, FQPF11P06, FQPF15P12 IPAK or TO220F see docsFQU17P06
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1N Ch MOSFET Vgs > 24V Vds > 25V Rds < 0.5 ohms IPAK GDSFQPF10N20CFairchildQ21.101.10512-FQPF10N20C 1Fairchild FQPF65N06, IRFI4228PBF, STP14NK50ZFP TO220F see docsFQPF65N06, STP14NK50ZFP
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1Dual Channel Comparator DIP8NJM2903DJRCU20.550.55513-NJM2903D 1LM2903N, (National, Fairchild, etc.)LM2903N
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1Dual Low Noise Audio Op Amp DIP8NJM2068DJRCU10.550.55513-NJM2068D1NJM2068DD (quieter), NE5532AP (noisier), OPA2277PA (low power see docs)NE5532AP, NE5532NG
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2Dual High Current Audio Op Amp DIP8NJM4556ADJRCU3,U40.801.60513-NJM4556AD 2NJM4556ADD (TLE2062CP low power substitute see docs)TBD?, eBay, or TLE2062CP for low power
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112 Volt Positive Fixed Regulator TO-220MC7812ACTGOn SemiU50.700.70863-MC7812ACTG 1MC7812ACTG (higher tolerance $0.47) LM7812ACT (MC7809 optional for AC only)Same as Mfg Part Number
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112 Volt Negative Fixed Regulator TO-220MC7912ACTGOn SemiU60.700.70863-MC7912ACTG 1MC7912ACTG (slightly lower noise $0.47) (MC7909 optional for AC only see docs)Same as Mfg Part Number
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48 Pin DIP IC Socket4808-3004-CP3MN/A0.200.80517-4808-3004-CP4Tyco 1825373-2 (gold upgrade)Same as Mfg Part Number
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2Male Battery Terminal12BC210-GREagleBT1, BT20.400.8012BC210-GR2Keystone 593 should work or Keystone 237 593/594 must be used in pairs (see docs)Keystone 237 (1 per battery)
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2Female Battery Terminal12BC220-GREagleBT1, BT20.400.8012BC220-GR2Keystone 594 should work or Keystone 237 593/594 must be used in pairs (see docs)Keystone 237 (1 per battery)
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23.5mm Stereo Phone Jack 5 pin w/ Switch (light BLUE!)STX-3120-5B-284CKyconJ2, J31.002.00806-STX-31205B284C 2STX-3120-5B (black), STX-3120-5B-577C (green PC output color)SPC21352 (SPC4128?) Should fit board, but not front panel, and not isolated
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15.5 x 2.1mm DC Power Jack (note 2)163-7620-EKobiconnJ10.900.90163-7620-E1CUI PJ-002A, (for 2.5mm wall adapter plug use Kobiconn 163-7625-E)Multicomp MJ-179PH (2.1mm) or MJ-180PH (2.5mm for alternate wall adapter)
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2DPDT Pushbutton SwitchPN22SJNA03QEC&KS1, S22.204.40611-PN22SJNA03QE 2PN22SJSA03QETTI has stock, Farnell SPUJ190900 will fit but different height/button depth
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2Button for aboveG003AC&KN/A0.801.60611-G003A2G003G (Gray) G003R (Red)See above, use TTI or find the button for the Alps part at Farnell
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40.22 uF MKT/MKS Film Cap >=50V 2.5x7.2mm 5mm LSB32529C224KEpcosC10, C15, C17, C180.200.80871-B32529C224K4Kemet R82DC3220AA60K, Wima MKS2C032201B00JSSDR82DC3220DQ60J
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20.022 uF Ceramic >= 50V <= 2.5mx7.2mm 5mm LSSR211E223MAAAVXC16, C210.300.60581-SR211E223MAA 2TDK FK28X7R1H223K, Kemet C322C223M5R5CA (non critical part)R82DC3220DQ60J
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4220 pF Stacked C0G Cap <= 20% >= 50 V 2.5mm LSK221J15C0GH5TL2VishayC11, C12, C19, C200.602.40594-K221J15C0GH5TL2 4AVX SR151A221JAR, Xicon 21RD622-RCSame as Mfg Part Number
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2>=2.2uF >=50 V Stacked Film Cap <= 7.2 x 7.2 x 13mm h 5mm LSMMK5225K63J06L4BULKKemetC13, C141.102.2080-MMK5225K63J06L4 2Wima MKS2B042201F00KSSD, MMK5225K63J06L4 (105K50 - 605K50 or 105K63 - 225K63) Use TTI or Farnell R82DC4150Z360J (1.5uf), Wima MKS2C041001F00KSSD (1 uf)
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11.0 uF >= 25V MLC Capacitor 5mm x 3.2 mm 2.5mm LSK105Z20Y5VF5TL2VishayC10.700.70594-K105Z20Y5VF5TL2 1TDK FK14Y5V1H105Z (non critical part as long as it will fit in the space) Same as Mfg Part Number
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21.0 uF >= 25V MLC Capacitor 5mm x 3.2 mm 5mm LSK105Z20Y5VF5TH5VishayC6, C70.701.40594-K105Z20Y5VF5TH5 2Can also use above (C1) and bend the leads to 5mm spacing, TDK FK24Y5V1H105ZSame as Mfg Part Number
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4470 uF 35v 10mm dia 16mm high 5mm LSREA471M1VBK-1016PLelonC2, C3, C4, C50.401.60140-REA471M1VBK1016P 4Nichicon UVR1V471MPD1, Epcos B41827A7477M000, Panasonic, EEU-FR1V471B, ECA-1VM471BSame as Mfg Part Number
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2220 uF 25v Low ESR 8mm dia x 15 mm high 3.5 mm LSUPW1E221MPDNichiconC8, C90.501.00647-UPW1E221MPD 2UPJ1E221MPH, United Chem EKY-250ELL221MHB5D, Panasonic EEU-FM1E221Same as Mfg Part Number
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2220 - 270 Ohms >=1 Watt <= 10% Metal Oxide < 13mmMOS1CT52R221JKOAR1, R20.150.30660-MOS1CT52R221J2Xicon 281-220-RC, 281-240-RC, 281-270-RC (see docs)Multicomp MCF 1W 220R
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41 Ohm >= 1/4 Watt 1% Metal Film < 7.3mmMF1/4DC1R00FKOAR10, R11, R15, R180.100.40660-MF1/4DC1R00F4KOA MF1/4DCT52R1R00F, Vishay CPF11R000FKE14Multicomp MF25 1R or MF12 1R (lower minimum order)
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210K Ohm >= 1/8 Watt 1% Metal Film Low Noise < 3.9mmCCF5010K0FKE36VishayR14, R200.150.3071-CCF5010K0FKE36 2Vishay RN50C1002FRE6 (mil spec upgrade non RoHS), Xicon 270-10K-RCWelwyn MFR3 10K FC, Multicomp MF12 10K
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21.5K Ohm >= 1/8 Watt 1% Metal Film Low Noise < 3.9mmSFR16S0001501FR500KOAR16, R220.300.60594-SFR16S0001501FR52KOA MFS1/4DCT52R1501F, Vishay RN50C1501FB14 (upgrade) (add 2 more for 2X gain)Welwyn MFR3 1K5 FC, Multicomp MF12 1K5
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21K Ohm >= 1/8 Watt 1% Metal Film Low Noise < 3.9mm 2.5x gainMRS16000C1001FRP00VishayR17, R210.200.40594-MRS16000C1001FRP 2Vishay RN50C1001FRE6 (upgrade) KOA MFS1/4DCT52R1001F (1K = 2.5X gain)Multicomp MF12 750R
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4274 Ohm >= 1/8 Watt 1% Metal Film Low Noise < 3.9mm 6.5x gainSFR16S0002740FR500VishayR3, R7, R19, R230.301.20594-SFR16S0002740FR54Vishay RN50C2740FRE6 (mil spec upgrade non RoHS), Xicon 270-274-RC (6.5X high gain)Multicomp MF12 240R
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4270K Ohm >= 1/8 Watt 1% Metal Film < 3.9mm270-270K-RCXiconR4, R5, R8, R240.251.00270-270K-RC4Xicon 270-267K-RC, 290-270K (5%)Multicomp MF12 270K
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340.2K Ohm >= 1/8 Watt 1% Metal Film < 3.9mmSFR16S0004022FR500VishayR6, R12, R130.300.90594-SFR16S0004022FR53Xicon 270-40.2K-RCMulticomp MF12 39K
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1!33K Ohm >= 1/8 Watt 1% Metal Film < 3.9mm270-33.2K-RCXiconR90.250.25270-33.2K-RC1Xicon 270-33.6K-RC, 299-33K-RC33K - 36K 1/8 watt size < 3.9mm long
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1~1.5 Meg 1/8 Watt <= 5% Film 1.9mm < 3.9mm270-1.5M-RCXiconR250.200.20270-1.5M-RC1Xicon 299-1.5M-RC, 299-1.2M-RC, 270-1.2M-RC1.2M - 1.5M 1/8 watt size < 3.9mm long
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110K 9mm Dual Audio Potentiometer 20 x 6mm or 15 x 6mm shaftRK09712200MCAlpsVR12.502.50688-RK09712200MC 1Alps RK09712200MY, RK097122008T, RK09712200HA, Bourns PTD902-2020F-A103 see docsBourns PTD902-2015F-A103, PTD902-2015K-A103, PTD902-2020K-A103 see docs
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1Volume Knob 6mm "D" Shaft 12mm depth (green line)450-BA461EagleN/A0.900.90450-BA4611450-BA261 (yellow line), BA761 (white) BA161 (red), Metal Kilo OEJL-63-3-7 (DigiKey)Multicomp CR-BA-1C6-180D (red line) 7C6 (white line)
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2200 Ohm >= 1/8 Watt 1% Metal Film Low Noise < 3.9mm 8x gainCCF50200RFKR36VishayR19, R230.20.4071-CCF50-200 2Xicon 270-200-RC (for 8.5X gain)Multicomp MF12-200R
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2499 Ohm >= 1/8 Watt 1% Metal Film Low Noise < 3.9mm 4x gainCCF50499RFKR36VishayR17,R210.20.4071-CCF50-499 2Xicon 270-499-RC (for 4X gain)Multicomp MF12-500R
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21.5K Ohm >= 1/8 Watt 1% Metal Film Low Noise < 3.9mm 2x gainSFR16S0001501FR500KOAR17,R210.20.40594-SFR16S0001501FR52KOA MFS1/4DCT52R1501F, Vishay RN50C1501FB14 ($1.19 ea upgrade) (for 2X gain)Welwyn MFR3 1K5 FC, Multicomp MF12 1K5
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1O2 Custom PC Board 100mm x 80mmTBDTBDN/A18.0018.00jdslab1Estimate Price With Shipping (USA)TBD
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85SUB TOTAL WITHOUT AC ADAPTER, BATTERIES, OR ENCLOSURE:$58.35
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1MULTICOMP - AC-1550 - ADAPTOR, 15VAC, 500MA AC-1550MULTICOMPFarnell21.5021.5011762411Upgrade: WAU16-400, WAU16-1000 See Docs: 412-218054, WAU20-200, EPA160025-P5-SZ Stontronics AC-1550EU AC-1550BS Must measure > 13.5 VAC and < 22 VAC no load!
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28.4V NiMh >= 170 maH "9 volt" Rechargeable Battery200 or 250 mAHTenergyBT1, BT27.5015.00eBay (all-battery)2incl. shipping, Gold Peak GP17R8H $9 ea Mouser, other options on eBay, etc. see docssame
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1Extruded Aluminum Enclosure 100x80x30mm (SI=silver, BK=black)B2-080SIBoxEnclosuresN/A23.5023.50Allied Electronics1BK black, GD gold, GR greed, RD red Boxenclosures.com (B3-080 for desktop)Farnell has most colors in stock
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misc, tooling cost, drill bit, socket, solder, shipping, transport, etc$20.00$9 Mouser, $9 Allied, $7 Front Panel Express
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TOTAL COMPLETE AMP without Machine Front Panel (GST included)$122.35
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Cost Price
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TOTAL COMPLETE AMP without Machine Front Panel + 6 months warranty$134.59for 6 months warranty set calculation
total sets sold = 20
total sets bought = 22
total sets for RMA usage = 2
( Cost Per Set * 22 ) /20
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TOTAL COMPLETE AMP without Machine Front Panel 1 week warranty$124.59
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Selling Price
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TOTAL COMPLETE AMP without Machine Front Panel + 6 months warranty$150
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TOTAL COMPLETE AMP without Machine Front Panel 1 week warranty$140
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TOTAL O2 + ODAC without Machine Front Panel + 6 months warranty$285
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Donation to charity
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Per Set$15.41
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for 20 sets $308.20
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Optional Add Ons
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1Machined Front PanelN/AFP ExpressN/A24.0024.00Front Panel Express1Lettering costs more, customize with FPE software, B3-080 needs larger panelwww.schaeffer-ag.de in Europe
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1ODAC Board Retrofit150.00150.001No Warranty by alamakazam
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GAIN RESISTORS (estimated gain value)
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1>= 8 pin SIP Socket to accept 0.015 in diameter leads10-0518-10AriesN/A1.801.80535-10-0518-10 110 pin SIP cuttable pin socket (8 pins needed) to socket gain resistors (solderless gain change)
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2133 Ohm >= 1/8 Watt 1% Metal Film Low Noise < 3.9mm 9x gain270-133-RCXiconR19, R230.30.60270-133-RC2Vishay Mil Spec Lower Noise Upgrade RN50C1330FB14 $1.19 each (~12X gain)Multicomp MF12-133R
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2165 Ohm >= 1/8 Watt 1% Metal Film Low Noise < 3.9mm 8.5x gain270-165-RCXiconR19, R230.30.60270-165-RC2Vishay Mil Spec Lower Noise Upgrade RN50C1620FB14 $1.19 each (10X gain)Multicomp MF12-165R
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2243 Ohm >= 1/8 Watt 1% Metal Film Low Noise < 3.9mm 7.5x gain270-243-RCVishayR19, R230.20.40270-243-RC2Vishay Mil Spec Upgrade RN50C2430FRE6, KOA MFS1/4DLT52R2490F (for ~7X gain)Multicomp MF12 240R
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2301 Ohm >= 1/8 Watt 1% Metal Film Low Noise < 3.9mm 7x gainSFR16S0003010FR500VishayR19, R230.20.40594-SFR16S0003010FR5 2Xicon 270-300-RC (for 6X gain)Multicomp MF12-300R
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2365 Ohm >= 1/8 Watt 1% Metal Film Low Noise < 3.9mm 5x gainSFR16S0003650FR500VishayR19, R230.20.40594-SFR16S0003650FR5 2Xicon 270-374-RC (for ~5X gain)Multicomp MF12-374R
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2715 Ohm >= 1/8 Watt 1% Metal Film Low Noise < 3.9mm 3x gainSFR16S0007150FR500VishayR17, R210.20.40594-SFR16S0007150FR52Xicon 270-715-RC, Vishay RN50C7500FB14 (upgrade) (for ~3X gain)Multicomp MF12 750R
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4.60
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LOW POWER OP AMPS
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1Dual Low Noise Audio Op Amp DIP8OPA2277PATI/Burr BrownU15.605.60595-OPA2277PA 1Longer battery life, slightly more noise & distortion, see documentationSame as Mfg Part Number
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2Dual High Current Audio Op Amp DIP8TLE2062CPTIU3,U43.607.20595-TLE2062CP 2Longer battery life, more distortion, less output current, see documentationSame as Mfg Part Number
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FOR LARGER DESKTOP VERSION
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1Vertical Panel Mount 1/4" 3 Conductor Phone JackNJ3FD-VNeutrikFor Larger Desktop Version1.41.40568-NJ3FD-V 1Optional 1/4 headphone jack with B3-080 or larger enclosureSame as Mfg Part Number
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1Female Panel Mount RCA Jack Gold Red InsulatorNYS367-2Neutrik/ReanFor Larger Desktop Version2.62.60568-NYS367-21Optional for RCA inputs with B3-080 or larger enclosureSame as Mfg Part Number
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1Female Panel Mount RCA Jack Gold White InsulatorNYS367-9Neutrik/ReanFor Larger Desktop Version2.62.60568-NYS367-91Optional for RCA inputs with B3-080 or larger enclosureSame as Mfg Part Number
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1Extruded Aluminum Enclosure 100x80x45mm (SI=silver)B3-080SIBoxEnclosuresFor Larger Desktop Version2626.00Allied Electronics1Allied Electronics B3-080BK black, GD gold, GR green, RD redSame as Mfg Part Number
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ODDS AND ENDS
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1Eagle Volume Knob for Bourns "K" series pots450-BA760Eagle0.900.90450-BA7601Knob for T18 "star" shaft Bourns volume pots
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