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JK Audio Pureformer Isolation Transformer

BH #JKPUR • MFR #PUR
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JK Audio Pureformer Isolation Transformer
Key Features
  • For Use with Line-Level Audio Equipment
  • Works with Computer Sound Cards
  • Reduces Hum & Noise
  • Removes Ground Loops & DC Paths
The Pureformer from JK Audio is a stereo audio interface that employs transformers to provide hum and noise reduction for any two pieces of line level audio equipment. The unit removes ground loops and DC paths that can cause severe signal degradation.

The Pureformer functions by isolating the electrical grounds of both pieces of equipment, allowing only the audio signal to pass between them. This is especially crucial when one of the pieces of equipment is a computer sound card, where the electrical noise from the computer can get into the rest of the audio system.

The unit is also useful in the event that two pieces of equipment are DC coupled. If both input and output are DC coupled, the signal can easily distort, break-up, or simply disappear. The Pureformer safely isolates any combination of AC and DC coupled inputs and outputs.

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JK Audio Pureformer Overview

The Pureformer from JK Audio is a stereo audio interface that employs transformers to provide hum and noise reduction for any two pieces of line level audio equipment. The unit removes ground loops and DC paths that can cause severe signal degradation.

The Pureformer functions by isolating the electrical grounds of both pieces of equipment, allowing only the audio signal to pass between them. This is especially crucial when one of the pieces of equipment is a computer sound card, where the electrical noise from the computer can get into the rest of the audio system.

The unit is also useful in the event that two pieces of equipment are DC coupled. If both input and output are DC coupled, the signal can easily distort, break-up, or simply disappear. The Pureformer safely isolates any combination of AC and DC coupled inputs and outputs.

Compact interface for removing hum and noise between any two pieces of audio equipment
Especially useful when hooking up on-board computer sound cards with other audio equipment
Pureformer can also help when input/output incompatibilities exist
Utilizes high-quality, low-distortion, 600-Ohm audio transformers
Durable die-cast aluminum construction
UPC: 814170010192

JK Audio Pureformer Specs

Frequency Response
20 Hz to 20 kHz, ±0.1 dB
Inputs
2 x RCA
Outputs
2 x RCA
Input Impedance
600 Ohms
Output Impedance
600 Ohms
Insertion Loss
0.8 dB
Isolation
1500 VRMS
Dimensions
3.6 x 1.3 x 1.8" (91 x 33 x 46 mm)
Weight
5 oz (142 g)
Packaging Info
Package Weight
0.525 lb
Box Dimensions (LxWxH)
5.7 x 3.35 x 2.3"

JK Audio Pureformer Reviews

JK Audio Pureformer Works!

By Arquilla,
Rated 5 out of 5
Date: 2024-03-11

I have a 15+ year old B+W subwoofer that started humming for the first time. I tried a couple of things regarding its electrical connection and that was not the issue. I searched on the internet and found this item at B+H with great reviews. It has been attached for two weeks now and no humming since. Thanks B+H!

Exactly as advertised

By Christopher
Rated 5 out of 5
Date: 2022-05-09

I had a major hum problem from my dual subs running moderately long rca runs into my AV receiver. Added the Pureformer between the subs and the AVR and no more hum. Gets five stars from me.

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