Toroid Isolation Transformer
Power conditioning is a critical component of a complete HIFI system. One would never realize the full potential of their HIFI system until proper power source is supplied to their equipment.Nowadays, the incoming mains are filled with all sorts of noise riding on them. Lots of these rubbish are entering the HIFI chain and causing all sorts of issues like humming, noise, heating, harshness, sibilance, noisy background and all sorts of other negative factors.
There are many types of power conditioning, and isolation transformer is one of the most effective method of conditioning. Isolation transformers have been used in hospitals, factories, R&D laboratories and many other facilities with sensitive electronics.
Now, these isolation are quite common in home audio due to the effectiveness of such devices.
J&K isolation transformer capacity - up to 3KVA (maximum size for grade A1 made in Japan toroid core)
- 3KVA unit is U$790 for isolation transformer only
- built unit vary in prices due to accompanying accessories and components
Options
- soft start, must for toroid transformer above 500VA (not sold separately due to limited stock)
- DC filter, must for toroid transformer to prevent DC saturation/hum
- EMI/RFI filters, clean up incoming and outgoing EMI/RFI
- single or dual display (input / output)
- different grades of audiophile IEC output sockets
- balanced or single ended output
- potting, must for lower noise operation and shielding
- electrostatic shield
Notes:
- other toroid core grades are available but not recommended due to less ideal electrical properties, higher loss, higher operating temperature
- we would recommend separate individual isolation for each individual equipment than a big toroid transformer with everything connected (shared) to it (audio gears generate noises themselves and cross-pollute each other)
Fully built audiophile balance power isolation transformers (with chassis, sockets, meters and etc) using Grade A1 toroid (highest grade toroid core, extremely low loss, high permeability, low operating temp, potted, made in Japan)
- 2.0KVA U$1220
- 2.5KVA U$1370
- 3.0KVA U$1472
- 3.5KVA U$1620 (max size for grade A1 core, other cores available)
Fully built audiophile balance power EI Z9-Z11 Standard Isolation Transformer (with chassis, sockets, meters and etc, using 0.27-0.35mm SiFe Grain Oriented (Hi-B), made in Japan)
- 1.0KVA U$1190
- 1.5KVA U$1740
- 2.0KVA U$2040
- 3.0KVA U$2390
- 4.0KVA U$2690
Audiophile balance power ULTRA Isolation Transformer (SiFe Grain Oriented (Hi-B), made in Japan)
- 500VA - U$390
- 750VA - U$540
- 1000VA - U$690
- 1500VA - U$1240
- 2000VA - U$1540
- 3000VA - U$1890
Note:
- EI balance power isolation is best for HIFI / Stereo use, projectors, tube amplifiers, front end (source, pre-amp) - warmer and quieter
- Toroid is better for AV amplifiers, high power systems - dynamic and fast
- Professional grade equipment case are available for international shipment
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| Soft-start and EMI/RFI filter |
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| Audiophile IEC sockets |
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| Dual Display - input and output voltage |
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| Potted toroid transformer, industrial grade power distributor |
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| Testing for shorts |
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| Potted 2.5KVA isolation transformer |
Some previous postings for your reference:
Toroid Isolation Transformer
Isolation Transformer
Isolation Transformer Review
J&K Audio Design
3/12/2016
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