ZXYAUDIO ZXY1590 Professional Audio Transformer - 1+1:1+1 Fully Symmetrical Balanced Studio Grade Isolation Transformer with High-Permeability Metal Shielding, PCB Pins

1. Product Overview

The ZXY1590 is a studio-grade audio transformer built on a fully symmetrical balanced topology. Both primary and secondary consist of two identical, isolated windings, which gives the transformer excellent common-mode rejection and lets it convert between balanced and unbalanced interfaces in either direction. It is housed in a full-enclosure, high-permeability metal case and mounts on standard PCB pins.

ZXY1590 soldered onto a professional audio circuit board

2. Key Features

• 1+1:1+1 fully symmetrical balanced circuit topology
• Both primary and secondary built from two identical, isolated windings
• CMRR > 60 dB (typical @ 50/60 Hz) for excellent common-mode noise suppression
• Frequency response 20 Hz – 20 kHz, ± 0.5 dB
• Total harmonic distortion < 0.1% (typical @ 1 kHz, rated level)
• Rated level +4 dBu, studio grade
• Full enclosure, high-permeability metal case blocks external EMI/RFI
• Balanced to unbalanced interface conversion, bidirectional
• Standard PCB pins for easy soldering and installation

Physical construction and high-permeability metal shielding: full enclosure, EMI/RFI rejection, CMRR > 60 dB

Unit label: ZXYAUDIO TRANSFORMERS ZXY1590 1:1+1+1 with orientation dot

3. Advantages

Splitting both primary and secondary into two identical, isolated windings is what makes the ZXY1590 a genuinely balanced design rather than simply a transformer with four leads. Interference that arrives equally on both conductors of a balanced line is treated as a common-mode signal and rejected: the common-mode rejection ratio is greater than 60 dB at 50/60 Hz, so hum and noise picked up along a cable run are largely removed before they reach the next stage.

The full-enclosure, high-permeability metal case blocks external EMI/RFI and stops the internal magnetic field from leaking out towards nearby sensitive circuits. Inside the enclosure the windings are mechanically protected, and the standard PCB pins allow the part to be soldered directly onto the board.

Across 20 Hz to 20 kHz the response stays within ± 0.5 dB and total harmonic distortion remains below 0.1% at the rated level, so the transformer adds no audible colour of its own. Galvanic isolation breaks the ground path between two pieces of equipment and removes ground-loop hum, while impedance matching keeps signal levels correct on both sides.

Electrical and acoustic performance: 20 Hz - 20 kHz (+/-0.5 dB), THD < 0.1%, +4 dBu

4. Applications

The ZXY1590 converts between balanced and unbalanced audio interfaces in either direction, isolating the two sides and matching their impedances.

• Balanced to unbalanced interface conversion, bidirectional
• Studio isolation and impedance matching
• Ground-loop hum and noise reduction
• Balanced input to unbalanced output, for example XLR line sources
• Mixing consoles, outboard processors and monitoring chains
• PCB-mounted professional audio equipment

Interface conversion and signal isolation: balanced input to unbalanced output

5. Specifications

5.1 Winding Structure

5.2 Electrical Performance

5.3 Physical Construction

5.4 Balanced Interface Reference

Note: pin 1 / 2 / 3 above refer to the balanced input connector shown in the interface diagram; the transformer itself mounts on standard PCB pins. All dimensions are in millimetres (mm).

Outline dimensions: 59.0 mm x 39.0 mm x 30.0 mm, pin length 5.0 mm

6. Quality &amp; Testing Assurance

• 100% acoustic testing and full inspection on every unit.
• RoHS compliant, CE marked, UKCA compliant.
• Manufactured under an ISO 9001 quality system.
• Each unit is labelled ZXYAUDIO TRANSFORMERS ZXY1590 with its ratio marking and orientation dot for traceability during assembly.
• Reliable performance, consistent quality, trusted worldwide.

Performance measurement on the audio test bench

Quality assurance and compliance: RoHS, CE, ISO 9001, UKCA

Model: ZXY1590  |  Brand: ZXYAUDIO  |  Topology: 1+1:1+1 fully symmetrical balanced. For datasheets, samples or OEM / ODM enquiries, please contact our sales team with your required quantity and destination port.