Transformers
APS audio transformers
Custom audio transformers
We will not be accepting new upgrade orders from 11/01/2025
until the end of the year. We will resume orders on 1/1/2026.
NEW: Balanced XLR Galvanic Isolators.
Click [HERE]
New Bridge ready Limited Edition unit now available !
*Just add the Bridge II upgrade to the Limited Edition Signature Series PLUS DAC
Our Signature Series PLUS on Steroids.
Limited number of units.
With an upgraded pure copper AC inlet, Silver input wiring, Our discrete 5 Volt regulator, A 50% larger pre regulator cap. Upgraded post regulator cap, Additional post regulator cap, Hand-picked transformers.
For the audiophile who demands the very best.
Unbelievable clarity, dynamics and realism.
*For a limited time: $ave 10% on upgrading your unit.
Note: We do not recommend using the USB input.
We also recommend the use of a preamp as the digital volume and attenuator also degrades the sound.
Bridge ready upgrade. We fixed issues when using the Bridge II network card.
Balanced XLR Galvanic isolators
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Tariff included in price $8.00
You will receive a pair (stereo) of our custom Balanced XLR Galvanic isolators. These will improve the sound of most systems that use our upgraded Directstream MK1 DAC's.
These work by isolating the ground path so the DAC will never have an issue with ground loops from the analog outputs.
Ground loops are a major cause of noise and jitter in these DAC's. We immediately notice a larger more open sound stage when using these especially when paired with our transformers and upgrades.
These work on most preamps as long as it doesn't use an opamp for it's inputs. We recomend using a high quality preamp.
We are located in the Baltimore / Washington area
Payment by PayPal F&F