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Audio Transformers

Audio Transformers facilitate the transfer of audio signals between circuits while maintaining signal integrity. Key specifications include Frequency Range, Impedance, and DC Resistance (DCR). These components are essential for applications such as new product design and prototyping.

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What are Audio Transformers ?

Audio Transformers are specialized components designed to transfer audio signals between different circuits while minimizing signal loss and distortion. They are commonly used in applications such as production electronics assembly and maintenance. Important specifications for selection include Frequency Range, which affects the audio quality; Impedance, which ensures compatibility with other components; and DC Resistance (DCR), which influences power efficiency. Validating these specifications is crucial for ensuring optimal performance in audio applications.

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Part & Mfr Approval Agency DC Resistance (DCR) Frequency Range Frequency Response Height Impedance Insertion Loss Mounting Type Operating Temperature Power Level Return Loss Size Termination Style Transformer Type Turns Ratio Voltage
Product image for TTC-13 by Tamura
TTC-13
Tamura
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 CSA-C22.2 No. 66-M1988, UL1459 225Ohm 300Hz ~ 3.5kHz ±0.5dB 0.736" (18.70mm) 4k 1.2dB Max @ 1kHz Through Hole - -45dB ~ 7dB - 0.799" L x 0.650" W (20.30mm x 16.50mm) PC Pin Data/Voice Coupling 1:0.397 1500VRMS @ 1 Minute
Product image for TTC-110 by Tamura
TTC-110
Tamura
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 CSA-C22.2 No. 66-M1988, UL1459 36Ohm 300Hz ~ 3.5kHz ±0.5dB 0.736" (18.70mm) 600 1.2dB Max @ 1kHz Through Hole - -40dB ~ 7dB - 0.799" L x 0.650" W (20.30mm x 16.50mm) PC Pin Data/Voice Coupling 1:1.033 1500VRMS @ 1 Minute
Product image for TY-401P-B by Triad Magnetics
TY-401P-B
Triad Magnetics
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 - 76.53Ohm 300Hz ~ 3.5kHz ±0.5dB 0.750" (19.05mm) 600CT 1.75dB Typ Through Hole -20°C ~ 85°C -45dB ~ 7dB 15dB Typ 0.820" L x 0.715" W (20.83mm x 18.16mm) PC Pin Data/Voice Coupling 1:1.07 1500VAC
Product image for TY-301P-B by Triad Magnetics
TY-301P-B
Triad Magnetics
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 - 36Ohm 300Hz ~ 3.5kHz ±0.5dB 0.740" (18.80mm) 600 1dB Typ Through Hole -20°C ~ 85°C -45dB ~ 7dB 26dB Typ 0.812" L x 0.700" W (20.62mm x 17.78mm) PC Pin Data/Voice Coupling 1:1.27 1500VAC
Product image for TY-311P-B by Triad Magnetics
TY-311P-B
Triad Magnetics
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 - 38Ohm 300Hz ~ 3.5kHz ±0.5dB 0.740" (18.80mm) 600 1dB Typ Through Hole -20°C ~ 85°C -45dB ~ 7dB 26dB Typ 0.812" L x 0.715" W (20.62mm x 18.16mm) PC Pin Data/Voice Coupling 1:1.05 1500VAC
Product image for TY-303P-B by Triad Magnetics
TY-303P-B
Triad Magnetics
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 - 260Ohm 300Hz ~ 3.5kHz ±0.5dB 0.740" (18.80mm) 4k 1dB Typ Through Hole -20°C ~ 85°C -45dB ~ 7dB 26dB Typ 0.812" L x 0.715" W (20.62mm x 18.16mm) PC Pin Data/Voice Coupling 2.43:1 1500VAC
Product image for TY-400P-B by Triad Magnetics
TY-400P-B
Triad Magnetics
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 - 76.5Ohm 300Hz ~ 3.5kHz ±0.5dB 0.750" (19.05mm) 600 1.75dB Typ Through Hole -20°C ~ 85°C -45dB ~ 7dB 15dB Typ 0.820" L x 0.715" W (20.83mm x 18.16mm) PC Pin Data/Voice Coupling 1:1.07 1500VAC
Product image for TY-403P-B by Triad Magnetics
TY-403P-B
Triad Magnetics
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 - 80Ohm 300Hz ~ 3.5kHz ±0.5dB 0.530" (13.46mm) 600 1.75dB Typ Through Hole -20°C ~ 85°C -45dB ~ 7dB 15dB Typ 0.815" L x 1.250" W (20.70mm x 31.75mm) PC Pin Data/Voice Coupling 1.81:1 1500VAC
Product image for TY-141P-B by Triad Magnetics
TY-141P-B
Triad Magnetics
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 - 820Ohm 200Hz ~ 15kHz ±2dB 0.740" (18.80mm) 10kCT 1.5dB @ 1kHz Through Hole -20°C ~ 85°C - 26dB 0.812" L x 0.700" W (20.62mm x 17.78mm) PC Pin Data/Voice Coupling 1:1 1500V
Product image for TY-142P-B by Triad Magnetics
TY-142P-B
Triad Magnetics
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 - 750Ohm 200Hz ~ 15kHz ±2dB 0.740" (18.80mm) 10kCT 1.5dB @ 1kHz Through Hole -20°C ~ 85°C - 26dB 0.812" L x 0.700" W (20.62mm x 17.78mm) PC Pin Data/Voice Coupling 2.24:1 1500V
Product image for TY-145P-B by Triad Magnetics
TY-145P-B
Triad Magnetics
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 - 44Ohm 200Hz ~ 15kHz ±2dB 0.740" (18.80mm) 600CT 1.5dB @ 1kHz Through Hole -20°C ~ 85°C - 26dB 0.812" L x 0.700" W (20.62mm x 17.78mm) PC Pin Data/Voice Coupling 1:1 1500V
Product image for TY-307P-B by Triad Magnetics
TY-307P-B
Triad Magnetics
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 - 43Ohm 300Hz ~ 3.5kHz ±0.5dB 0.470" (11.94mm) 600 1dB Typ Through Hole -20°C ~ 85°C -45dB ~ 7dB 26dB Typ 0.670" L x 0.781" W (17.02mm x 19.84mm) PC Pin Data/Voice Coupling 1:1.07 1500VAC
Product image for TY-144P-B by Triad Magnetics
TY-144P-B
Triad Magnetics
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 - 1.18kOhm 200Hz ~ 15kHz ±2dB 0.740" (18.80mm) 15kCT 1.5dB @ 1kHz Through Hole -20°C ~ 85°C - 26dB 0.812" L x 0.700" W (20.62mm x 17.78mm) PC Pin Data/Voice Coupling 1:1 1500V
Product image for TY-304P-B by Triad Magnetics
TY-304P-B
Triad Magnetics
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 - 42Ohm 300Hz ~ 3.5kHz ±0.5dB 0.740" (18.80mm) 600CT 1dB Typ Through Hole -20°C ~ 85°C -45dB ~ 7dB 26dB Typ 0.790" L x 0.812" W (20.07mm x 20.62mm) PC Pin Data/Voice Coupling 1:1.05 1500VAC
Product image for TY-300P-B by Triad Magnetics
TY-300P-B
Triad Magnetics
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 - 172Ohm 300Hz ~ 3.5kHz - 0.740" (18.80mm) 600 0.8dB Typ Through Hole -20°C ~ 85°C -45dB ~ 7dB 30dB Typ 0.812" L x 0.700" W (20.62mm x 17.78mm) PC Pin Data/Voice Coupling 1:2.48 1500VAC
Product image for MT25-PC by Tamura
MT25-PC
Tamura
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Product image for TY-301P by Triad Magnetics
TY-301P
Triad Magnetics
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 - 36Ohm 300Hz ~ 3.5kHz ±0.5dB 0.740" (18.80mm) 600 1dB Typ Through Hole -20°C ~ 85°C -45dB ~ 7dB 26dB Typ 0.812" L x 0.700" W (20.62mm x 17.78mm) PC Pin Data/Voice Coupling 1:1.27 1500VAC
Product image for 290XX by Hammond Manufacturing
290XX
Hammond Manufacturing
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 - 8.03Ohm - - 2.013" (51.13mm) - - Chassis Mount - - - 3.000" L x 2.500" W (76.20mm x 63.50mm) Wire Leads - - 120/240VAC
Product image for 1750L by Hammond Manufacturing
1750L
Hammond Manufacturing
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 - 46.48Ohm, 51.04Ohm 70Hz ~ 15kHz ±1dB 3.523" (89.48mm) 4.2kCT - Chassis Mount - 60W - 4.050" L x 3.050" W (102.87mm x 77.47mm) Wire Leads Push-Pull Audiophile, Ultra-Linear - Tube Output 31.16:1 -
Product image for 1750K by Hammond Manufacturing
1750K
Hammond Manufacturing
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 - 43.16Ohm, 46.28Ohm 70Hz ~ 15kHz ±1dB 3.516" (89.31mm) 4kCT - Chassis Mount - 50W - 4.063" L x 3.125" W (103.20mm x 79.38mm) Wire Leads Push-Pull Audiophile, Ultra-Linear - Tube Output 44.67:1 -
Product image for 1750KA by Hammond Manufacturing
1750KA
Hammond Manufacturing
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 - 45.53Ohm, 49.09Ohm 70Hz ~ 15kHz ±1dB 3.563" (90.50mm) 4.15kCT - Chassis Mount - 50W - 4.050" L x 3.136" W (102.87mm x 79.65mm) Wire Leads - - 2000V @ 1 Second
Product image for 1750Y by Hammond Manufacturing
1750Y
Hammond Manufacturing
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 - 289Ohm 70Hz ~ 15kHz ±1dB 3.123" (79.32mm) 6.2kCT - Chassis Mount - 15W - 2.500" L x 3.328" W (63.50mm x 84.53mm) Wire Leads Push-Pull Audiophile, Ultra-Linear - Tube Output 27.87:1 -
Product image for 125FSE by Hammond Manufacturing
125FSE
Hammond Manufacturing
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 - - 100Hz ~ 15kHz ±1dB 3.150" (80.01mm) 2.5k ~ 10k - Chassis Mount - 20W - 3.760" L x 2.520" W (95.50mm x 64.01mm) Solder Lug General Purpose - -
Product image for 1750N by Hammond Manufacturing
1750N
Hammond Manufacturing
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 - 41.74Ohm, 3.14Ohm 70Hz ~ 15kHz ±1dB 3.800" (96.52mm) 3.2kCT - Chassis Mount - 50W - 3.125" L x 3.350" W (79.38mm x 85.09mm) Wire Leads Push-Pull Audiophile, Ultra-Linear - Tube Output 14.30:1 -
Product image for 1760K by Hammond Manufacturing
1760K
Hammond Manufacturing
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 - 89.43Ohm 70Hz ~ 15kHz ±1dB 3.516" (89.31mm) 4kCT - Chassis Mount - 50W - 4.063" L x 3.125" W (103.20mm x 79.38mm) Wire Leads Push-Pull Audiophile, Ultra-Linear - Tube Output 44.67:1 -
Product image for 1750P by Hammond Manufacturing
1750P
Hammond Manufacturing
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 - 41.3Ohm, 40.5Ohm, 81.8Ohm 50Hz ~ 12kHz ±1dB 3.188" (80.98mm) 3.4kCT - Chassis Mount - 50W - 3.750" L x 3.090" W (95.25mm x 78.49mm) Solder Lug Push-Pull Audiophile, Ultra-Linear - Tube Output 14.24:1 -
Product image for 1750W by Hammond Manufacturing
1750W
Hammond Manufacturing
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 - 11.4Ohm 70Hz ~ 15kHz ±1dB 3.563" (90.50mm) 2kCT - Chassis Mount - 100W - 4.063" L x 3.450" W (103.20mm x 87.63mm) Wire Leads Push-Pull Audiophile, Ultra-Linear - Tube Output 22.35:1 -
Product image for 1760W by Hammond Manufacturing
1760W
Hammond Manufacturing
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 - 11.4Ohm 70Hz ~ 15kHz ±1dB 3.563" (90.50mm) 2kCT - Chassis Mount - 100W - 4.050" L x 3.465" W (102.87mm x 88.01mm) Wire Leads Push-Pull Audiophile, Ultra-Linear - Tube Output 22.35:1 -
Product image for 1615 by Hammond Manufacturing
1615
Hammond Manufacturing
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 - - 30Hz ~ 30kHz ±1dB 3.060" (77.72mm) 5kCT ±1dB Chassis Mount - 15W - 3.250" L x 2.500" W (82.55mm x 63.50mm) Wire Leads Push-Pull Audiophile, Ultra-Linear - Tube Output - -
Product image for 1609A by Hammond Manufacturing
1609A
Hammond Manufacturing
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 - 102.2Ohm, 114.3Ohm 30Hz ~ 30kHz ±1dB 3.060" (77.72mm) 10kCT - Chassis Mount - 10W - 2.750" L x 2.500" W (69.85mm x 63.50mm) Wire Leads Push-Pull Audiophile, Ultra-Linear - Tube Output - 2000V @ 1 Second
Product image for 1750Q by Hammond Manufacturing
1750Q
Hammond Manufacturing
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 - 81.61Ohm, 78.63Ohm 50Hz ~ 12kHz ±1dB 3.813" (96.85mm) 7.371kCT - Chassis Mount - 50W - 3.125" L x 3.280" W (79.38mm x 83.31mm) Wire Leads Push-Pull Audiophile, Ultra-Linear - Tube Output 21.46:1 -
Product image for 290QX by Hammond Manufacturing
290QX
Hammond Manufacturing
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 - 8.054Ohm, 9.752Ohm - - 2.876" (73.05mm) - - Chassis Mount - - - 3.375" L x 2.385" W (85.73mm x 60.58mm) Solder Lug - - 120/240VAC
Product image for 125GSE by Hammond Manufacturing
125GSE
Hammond Manufacturing
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 - 50Ohm 100Hz ~ 15kHz ±1dB 3.460" (87.88mm) 2.5k ~ 10k - Chassis Mount - 25W - 4.150" L x 2.880" W (105.41mm x 73.15mm) Solder Lug General Purpose - 2000V @ 1 Second
Product image for 1620 by Hammond Manufacturing
1620
Hammond Manufacturing
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 - 65.4Ohm, 74.6Ohm 30Hz ~ 30kHz ±1dB 3.060" (77.72mm) 6.6kCT ±1dB Chassis Mount - 20W - 3.500" L x 2.500" W (88.90mm x 63.50mm) Wire Leads Push-Pull Audiophile, Ultra-Linear - Tube Output - 2000V @ 1 Second
Product image for 1750T by Hammond Manufacturing
1750T
Hammond Manufacturing
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 - 54Ohm, 60Ohm 70Hz ~ 15kHz ±1dB 3.863" (98.12mm) 4kCT - Chassis Mount - 30W - 3.125" L x 3.810" W (79.38mm x 96.77mm) Wire Leads Push-Pull Audiophile, Ultra-Linear - Tube Output 15.86:1 -
Product image for 1650F by Hammond Manufacturing
1650F
Hammond Manufacturing
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 - 210Ohm 30Hz ~ 30kHz ±1dB 3.060" (77.72mm) 7.6kCT ±1dB Chassis Mount - 25W - 3.500" L x 2.500" W (88.90mm x 63.50mm) Wire Leads Push-Pull Audiophile, Ultra-Linear - Tube Output - 2000V @ 1 Second
Product image for 290VX by Hammond Manufacturing
290VX
Hammond Manufacturing
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 - 1.52Ohm - - 3.858" (97.99mm) - - Chassis Mount - - - 4.125" L x 3.985" W (104.77mm x 101.22mm) Wire Leads - - 120/240VAC
Product image for 850EA by Hammond Manufacturing
850EA
Hammond Manufacturing
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 - 27Ohm 20Hz ~ 20kHz ±0.5dB 1.650" (41.90mm) 200, 50/50 1dB Chassis Mount - 15dB - 1.700" L x 1.200" W (43.18mm x 30.48mm) Wire Leads - - -
Product image for 850GA by Hammond Manufacturing
850GA
Hammond Manufacturing
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 - 71Ohm 20Hz ~ 20kHz ±0.5dB 1.650" (41.90mm) 600, 150/150 1dB Chassis Mount - 15dB - 1.700" L x 1.200" W (43.18mm x 30.48mm) Wire Leads - - -
Product image for 850LA by Hammond Manufacturing
850LA
Hammond Manufacturing
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 - 2.24kOhm 20Hz ~ 20kHz ±0.5dB 1.650" (41.90mm) 20k, 5k/5k 1dB Chassis Mount - 15dB - 1.700" L x 1.200" W (43.18mm x 30.48mm) Wire Leads - - -
Product image for 850NA by Hammond Manufacturing
850NA
Hammond Manufacturing
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 - 65Ohm 20Hz ~ 20kHz ±0.5dB 1.650" (41.90mm) 600, 150/150 1dB Chassis Mount - 15dB - 1.700" L x 1.200" W (43.18mm x 30.48mm) Wire Leads - - -
Product image for 850QA by Hammond Manufacturing
850QA
Hammond Manufacturing
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 - 4.89kOhm 20Hz ~ 20kHz ±0.5dB 1.650" (41.90mm) 40k, 10k/10k 1dB Chassis Mount - 15dB - 1.700" L x 1.200" W (43.18mm x 30.48mm) Wire Leads - - -
Product image for 1750X by Hammond Manufacturing
1750X
Hammond Manufacturing
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 - 5.03Ohm, 12.3Ohm, 7.16Ohm 50Hz ~ 12kHz ±1dB 3.238" (85.25mm) 2kCT - Chassis Mount - 100W - 3.786" L x 4.049" W (96.16mm x 102.84mm) Solder Lug Push-Pull Audiophile, Ultra-Linear - Tube Output 10.14:1 -
Product image for 1750V by Hammond Manufacturing
1750V
Hammond Manufacturing
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 - 138Ohm 70Hz ~ 15kHz ±1dB 3.843" (97.61mm) 4kCT - Chassis Mount - 30W - 3.125" L x 3.325" W (79.38mm x 84.46mm) Wire Leads Push-Pull Audiophile, Ultra-Linear - Tube Output 15.93:1 -
Product image for 1650H by Hammond Manufacturing
1650H
Hammond Manufacturing
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 - - 30Hz ~ 30kHz ±1dB 3.810" (96.77mm) 6.6kCT ±1dB Chassis Mount - 40W - 4.000" L x 3.130" W (101.60mm x 79.50mm) Wire Leads Push-Pull Audiophile, Ultra-Linear - Tube Output - -
Product image for 40-18108 by CLASSIC
40-18108
CLASSIC
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Product image for 1645 by Hammond Manufacturing
1645
Hammond Manufacturing
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 - - 30Hz ~ 30kHz ±1dB 3.060" (77.72mm) 5kCT ±1dB Chassis Mount - 30W - 3.750" L x 2.500" W (95.25mm x 63.50mm) Wire Leads Push-Pull Audiophile, Ultra-Linear - Tube Output - -
Product image for 1650K by Hammond Manufacturing
1650K
Hammond Manufacturing
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 - - 30Hz ~ 30kHz ±1dB 3.810" (96.77mm) 3.4kCT ±1dB Chassis Mount - 50W - 4.000" L x 3.130" W (101.60mm x 79.50mm) Wire Leads Push-Pull Audiophile, Ultra-Linear - Tube Output - -
Product image for 1650P by Hammond Manufacturing
1650P
Hammond Manufacturing
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 - - 30Hz ~ 30kHz ±1dB 3.810" (96.77mm) 6.6kCT ±1dB Chassis Mount - 60W - 4.250" L x 3.130" W (107.95mm x 79.50mm) Wire Leads Push-Pull Audiophile, Ultra-Linear - Tube Output - -
Product image for 1650N by Hammond Manufacturing
1650N
Hammond Manufacturing
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 - 82.5Ohm 30Hz ~ 30kHz ±1dB 3.859" (98.02mm) 4.3kCT ±1dB Chassis Mount - 60W - 4.185" L x 3.125" W (106.30mm x 79.38mm) Wire Leads Push-Pull Audiophile, Ultra-Linear - Tube Output - 2000V @ 1 Second
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About Audio Transformers

Audio transformers play a vital role in the transmission and transformation of audio signals in electronic circuits. They are designed to match the impedance of audio devices, ensuring optimal signal transfer and minimal loss. When sourcing audio transformers, it is crucial to consider several important attributes, including DC Resistance (DCR), frequency range, frequency response, height, impedance, insertion loss, mounting type, operating temperature, and power level.

These components are commonly used in applications such as new product design and prototyping, production electronics assembly, maintenance and field replacement, and engineering evaluation and qualification. Understanding the specific requirements of your application will help you select the right audio transformer for your needs.

When comparing audio transformers, prioritize critical specifications first. Validate lifecycle status and explore alternate-source options before submitting a Request for Quotation (RFQ). It is also essential to confirm mechanical and electrical compatibility with your existing design constraints. By focusing on parametric filtering before brand preference, you can effectively reduce sourcing risks and ensure that you select the most suitable components for your projects.

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