EE25-4.0H 1:1:1:1 Audio Isolation Transformer - Four Matched 4.0 H Windings | 20 Hz to 20 kHz | DIP Through-Hole | PCB Mount
The EE25-4.0H is a PCB-mountable audio isolation transformer built on the EE25 in-line bobbin platform. With a 1:1:1:1 turns ratio and four matched 4.0 H windings, this device provides electrical isolation between circuits, suppresses AC hum caused by system grounds, and enables clean coupling of balanced or unbalanced audio signals from 20 Hz to 20 kHz. It is used for voice and data coupling, breaking ground loops between disconnected devices, and providing isolated...
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EI14 600 Ω: 600 Ω Audio Isolation Transformer - 1:1 Vertical PCB Through-Hole Hard Pins | 300 mH Inductance | 1000 VAC Withstand Voltage | Voice Band 300 Hz - 3.5 kHz
EI14 Vertical Audio Isolation Transformer, 600 Ω: 600 Ω. Reference Part Number ZXY-B2127-2 (EI14 series, hard pin version).
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EI2401-1:2 Audio Isolation Transformer - 1:2 Step-Up, +6 dB Gain, 20 Hz-20 kHz, EI Silicon Steel Laminations, 3+3 DIP Through-Hole Pins, Passive Ground Loop Isolator
EI2401-1:2 audio isolation transformer, 1:2 step-up, approximately +6 dB voltage gain, passive galvanic isolation, 20 Hz - 20 kHz, 3+3 through-hole DIP package.
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EI28 Low-Frequency Power Transformer 220V to 12V - Vertical PCB Pin Mount Core Voltage Converter
● EI28 Laminated Silicon Steel Core: Made with Z11 silicon steel laminations for stable magnetic performance.
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ZXY EI41 Audio Transformer Low Frequency Silicon Steel Core Power Transformer
The ZXY-14 audio isolation transformer (marked as "ZXY-14 AUDIO") is a compact audio coupling transformer built on a high-permeability laminated core, supplied as matched pairs for stereo and differential audio channels. Each unit measures 18 × 14 × 25 mm overall, with 75 mm flexible pure copper leads — one red winding and one blue winding. Dot markers identify the start point of each winding, allowing easy polarity verification at a glance.
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HotSMD Audio Isolation Transformer, ED8-600Ω to 600Ω, 1:1, 6-Pin, 10.5 mm, 1250 V AC Withstand Voltage
A 600Ω-to-600Ω audio isolation transformer in a surface-mount package. The two windings are 1:1, so the device acts as an electrical isolation break in a line-level path rather than as a matching transformer: the voltage across it remains unchanged, only the ground connection between the two sides is removed. Six gull-wing leads, three per side, let it mount on the board like any other SMD part, which is why it sits alongside the through-hole parts it replaces.
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ZXY-14 Audio Isolation Transformer - Dual Matched Pair Laminated Core Audio Coupling Transformer for Studio Microphone Preamps and Mixing Consoles
The ZXY-14 audio isolation transformer (marked "ZXY-14 AUDIO") is a compact audio coupling transformer built on a high-permeability laminated core, supplied as dual matched pairs for stereo and differential audio channels. Each unit measures 18 × 14 × 25 mm overall and features 75 mm flexible pure copper leads, color-coded with one winding in red and the other in blue. The start of each winding is identified by a dot marking for at-a-glance polarity confirmation.
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ZXY-14 EI Audio Output Transformer for Studio Microphone, Custom Turns Ratio
● Professional studio recording: Suitable for vocal and instrument recording
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Custom Permalloy 600:600 Ohm Audio Isolation Transformer, Ground Loop Noise Isolator for Tube Preamps and DI Boxes | Factory Manufacturer
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HotZXY-2622 75:75/300/600 Ohm Audio Isolation Transformer, Shielded Chassis-Mount Line Transformer with Tapped Secondary
The ZXY-2622 is a shielded, chassis-mounted audio isolation transformer featuring a 75-ohm primary and a tapped secondary, offering 75, 300, and 600 ohm impedances. The housing label reads ZXY AUDIO, TRANSFORMERS, 75:75/300/600, and ZXY-2622. Behind it is customer drawing G2525, revision A/0, dated November 6, 2025, which also provides the manufacturer's own part name as ZXY2600-75:75/300/600. Three identifiers describe the same component: marking, drawing number, and internal part name. Reference any one of them.
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ZXY-3012 Permalloy Audio Isolation Transformer, DIP Through-Hole, Sealed 31.0 mm Metal Case, Five Turns Ratios from 1:1 to 12:1
ZXY-3012 is the product identifier. JT-DB-EPC is the drawing model name printed above it on the case label, and ZXYAUDIO and ZXYL are the two brand marks used in images and datasheets. This part is a Permalloy audio isolation transformer in a sealed cylindrical metal case, 31.0 mm in diameter and 22.0 mm high, with six through-hole pins at the bottom arranged in two rows and no mounting flange. It is installed to a circuit board or socket via its pins.
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ZXY-3108 12:1 Audio Isolation Transformer - 140 kOhm Permalloy Core | Mu-Metal Shield | Vertical 4+4-Pin DIP | High-Fidelity Tube Amp
The ZXY-3108 is a 12:1 audio isolation transformer featuring a permalloy core enclosed in a mu-metal shield. It combines a 140 kOhm primary impedance with a 12:1 (N1:N2) turns ratio to provide electrical isolation and effective common-mode noise rejection in high-impedance, high-fidelity audio signal paths. The product features a 31.0 mm x 22.0 mm vertical-mount body with a 4+4 pin layout, designed for through-hole PCB mounting.
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