In the past, we've been great supporters of the Jays sound. Easy-going and lush in several of Jays's ranges, it's very easy to get on with. The t-JAYS Four sound is no different.
These earphones are detailed and clear, while offering a generous bottom end that, while slightly more voluminous than is accurate, never booms or bloats out. It's a sound we find very easy to live with, for hour-after-hour of fatigue-free listening.
There is a lack of mid-range texture and presence, though, that gives the t-JAYS Four some trouble in making more raucous music sound suitably aggressive and in-your-face. It also ensures that these earphones need a decent volume level to produce best results unless you're in a quiet environment - with a full and warm, but slightly delicate sound they don't have the mid-range grit (or sound isolation) to contend with a great deal of ambient noise.
There's a slight softness here too, and the t-JAYS Four simply struggle to render vocals as realistically or with as much punch as the sub-£100 range's top performers - the Nocs NS400 and Phonak PFE012. Without being able to fully render the inflections in singers' voices, impact can be spoilt. For example, Prince doesn't sound like he wants to get off with everything in the room in his 1979 self-titled album, when piped through the t-JAYS Four. And that's a cardinal audio sin.
Other than not quite having the tight-bunned tautness to make some music sound quite as aggressive or as sexually suggestive as we'd like, the t-JAYS Four are extremely enjoyable earphones. Their laid-back, open sound has a light touch that can make more relaxed tunes sound all-the-more… relaxing. In this respect, they continue the standard set by the model one step down, the a-JAYS Four.
However, we can't forget that there are better earphones out there that offer the same iPhone remote functionality. Yes, we're talking about the Nocs NS400. Close relative of 2011 TrustedReviews Awards Phonak nominee, Phonak PFE 022 are also - as ever - worth serious consideration, offering a single-button handsfree housing. The Jays t-JAYS Four - they're good but don't lead the pack among similarly-priced alternatives.
Light of weight, open of sound and interesting in design, the t-JAYS Four seem a great addition to Jays's earphone line-up. There are, however, some problems. The cable design leaves an annoying junction box dangling down from your ears and there's a slight softness to the sound that ensures they can't beat the very best at this highly-competitive sub-£100 price.