If you don’t mind a drier vocal presentation, the NOVA is a well-considered, versatile and technically impressive performer. It has no glaring weaknesses, but some idiosyncrasies that will limit mass appeal.
The M4 is one of the best in-ear monitors on the market for those that enjoy a clean, tactile sound and want enormous detail retrieval presented in a holographic manner.
With its exceptionally solid fit, class-leading cable and balanced sound that doesn’t sacrifice bass extension and power, Nostalgia Audio have created one of the most versatile IEMs in its price class.
A resolving yet non-fatiguing sound and thoughtful design make Fir’s latest offering a perfectly evolved complement to the audio enthusiast’s EDC.