Sometimes, you learn something new that changes everything. I have read about jitter and quantization with digital signals for some time but I didn’t know there were small, affordable devices that correct it. I have always read about really expensive devices that included a noise filtering technology. Well, I was poking around looking for a smaller, cheaper DAC for work – my Samsung Galaxy S7 doesn’t cut it by itself for high fidelity and my old Fiio E7 DAC won’t work with the newer OS updates for IOS and Android. I stumbled on something called a Dragonfly which had high praise. A little smaller than a thumbdrive, the AudioQuest Dragonfly acted almost like an inline DAC. Hmmm. Then I found something new. AudioQuest also makes a USB jitter filter called a Jitterbug. Reviews mentioned a better device – the iSilencer 3.0 by iFi Audio.
So I bought one and wasn’t able to try it out until I got to work. Here I am, just blown away that I’m listening to a phone and not a high-end stereo. I had my little setup (phone/laptop, audioengine D1 with Sony Headphones MDR-7506) at work and was so frustrated by the USB noise from the one portable working DAC that I have. For some reason the signal that comes out of my laptop and my phone sucks connecting to this thing. The iSilencer3 really does work and it’s amazing! Not snake oil as I feared. The signal is clear and lets the DAC do it’s job without any digital artifacts and most important from the phone – no intermittent disruptions. Bass is tighter and the headroom is wider. I am not sure exactly how this is accomplished but for $50, this little gadget is an incredible value and a needed accessory for any audiophile on the go.