I ended up having a LeMega M4+ for one room and the JL Cello for the other, so was able to listen to them side by side. The audio quality (with which I was pleased) seems the same with both. The only difference is that the equivalent volume is reached at lower numeral settings on the JL than the LeMega. The JL’s cabinet is made from solid wood which is very attractive (both are walnut finish ones) whilst the LeMega is veneered in a slightly different pattern of wood. To my taste, the JL’s appearance is slightly nicer, as the cream plastic is a “cleaner” shade and the wide effect to the size of the LCD looks nice, along with the shape of the speaker grilles – but the JL’s actual display is less clear from some angles due to the background becoming brighter at angles and its white graphics (vs yellow on the M4+) are less contrasty – plus all of its other icons are spindly and basically white with an occasional hint of blue, whilst the M4+ uses bolder, full colour icons which are far easier to see at a distance and differentiate. The remote controls are identical in function but labelled in a slightly different style. I do however regret the omission of the Spotify Connect feature (NB it requires Spotify Premium) on the JL which the M4+ has, since using Bluetooth connection feature instead results in lower volume than other sources (on both versions) which is not an issue with Spotify Connect, which is also much more convenient and shows cover art on the display of the unit.

Just to update (rather late, sorry!): the JL Octave (equivalent to the reviewed Numan model and the LeMega M3+ original) IS compatible with Undok, as is the JL Cello (equivalent to the Numan Two 2.1 and the “original” model which is the LeMega M4+) is also compatible with Undok.

Thanks for the insight here. Would you expect any difference in audio quality between variations from different manufacturers? For example, was looking at the Lemega M4+ but the JL Cello equivalent got poor reviews by Which?