Flawless gloss finish, Comfortable and well-isolating design, Quality stock cable, Highly refined and versatile tuning, Excellent dynamics for a BA design, Jack of all trades master of many, Easy to drive
Treble extension and sub-bass definition could be improved, Soundstage depth just above average in-class
The RSV is one of the most well-rounded and instantly likeable earphones I’ve tested, representing an excellent value proposition even at its elevated price tag.
Soft Ears are the luxury division of the now widely renowned Moondrop, seeking to offer a more refined experience at more premium price tiers. Their product portfolio is more focused and mostly high-end focused. This starts at their all-out co-flagships, the 10x BA driver RS10 reference monitor and their Tribrid Cerberus. Alternatively, the Turii offers a high-end single-DD configuration that has become more popularised in recent years. The RSV is their cheapest model if not a cheap earphone in isolation. The team spent 1 year honing it to perfection, aiming to offer a scaled back version of the RS10 experience with the same technologies and engineering on a simplified and easier to drive 5-BA platform. Compared to the flat out reference RS10, the RSV has been slightly reworked to provide a heavier emphasis on dynamics. Its engaging yet immaculately clean sound, ease of driving and more accessible price point makes it a great choice for audio enthusiasts.
The RSV comes in at $729.99 USD. You can read all about it and treat yourself to a unit here.
I would like to thank the team at Soft Ears very much for their quick communication and for providing me with the RSV, RS10 and Cerberus for the purpose of review. All words are my own and there is no monetary incentive for a positive review. I paid a slightly reduced cost for the earphones in return for honest evaluation and will attempt to be as objective as possible.
- Drivers: 5x BA
- Crossover: 6-Component, 3-way
- Sensitivity: 125dB @ 1kHz
- Impedance: 8 Ohms
- Frequency Response: 5Hz – 40kHz
- Socket: 0.78mm, 2-pin
Behind the Design –
Tuned Acoustics & Crossovers
The combination of electronic crossover and passive filters has enabled Soft Ears to achieve their desired note presentation in addition to their ideal frequency response. Using a 3rd order LRC filter for bass, impedance + low-pass for the midrange and film capacitors for the high-end, the company was able to achieve both whilst maintaining almost linear phase. This is aided by the 3D-printed shell and internal acoustics, leading to maximised extension, resolution and sharper imaging.
Moondrop pioneered the VDSF tuning curve which is a combination of the diffuse field neutral and Harman Curves which have become industry standards as of late. Every model lies on a spectrum between both. The Moondrop sound has become hugely popular with users and critics alike due to its combination of timbral accuracy, balance and improved listenability over time compared to the vanilla Harman and DF Neutral curves. The RSV represents one of the most refined takes on it yet.
The RSV has the most exclusive unboxing of the Soft Ears line-up with a large magnetic box that folds open to reveal the leather carrying case and accessories within a separate box. The case contains the earphones and cable. Each earpiece comes protected within a fabric pouch that prevent scratches during shipping. The accessories include 3 pairs of silicone tips in addition to 3 pairs of memory foam tips that offer a warmer, softer sound. In addition, a cleaning tool is provided alongside a metal Soft Ears card. Of note, the tips have an especially large bore size which can limit aftermarket pairings. The stock tips also have a seat promoting a more homogenous fit depth, likely in order to provide a more consistent sound between listeners. As there was such a heavy emphasis on tonality on this earphone, I decided to stick with the stock ear tips, of course, experiment for your preference if this is not to your liking.
As a huge car fanatic, the RSV invoked some primal instinct in me. From the sleek, smooth yet symmetrical styling to the gold foil inlay atop carbon fibre faceplates, the RSV advertises its sporty, high-performance nature. I am a huge fan of the combination of texture and simple yet flawlessly finished 3D printed piano black that oozes quality even in the absence of metal and its associated density in the hand. With its solid 3D-printed design, the RSV feels far more substantial than your average acrylic monitor. If I had one complaint, perhaps the nozzle could have a small ridge to help tips stay attached as those with wet wax may find themselves having to clean them frequently.
Up top are 2-pin 0.78mm recessed connectors compatible with a wide range of aftermarket options. The stock cable leaves little to be desired, with a smooth matte jacket and very sturdy yet minimally cumbersome construction. The wires are a little springy though it is supple enough to coil without issue and microphonic noise isn’t exacerbated either. The pre-moulded ear guides are comfortable and the connectors complete the aesthetic with their clean matte black finish. Altogether a well-considered package, perhaps a modular or balanced termination could have been employed. Arguably, their use of the widely adopted 3.5mm standard is in line with the company’s intentions that this monitor should be enjoyed from almost any source.
Fit & Isolation –
This is a medium-sized earphone and its fit will be reminiscent to anyone familiar with faux-custom style monitors. It sits comfortably in the outer ear and its rounded design is devoid of features that may cause hotspot formation over time. It protrudes slightly, meaning they won’t be suitable for sleeping on, but the RSV isn’t especially bulky either. For my ears, they were comfortable for hours on end and I achieved a strong, consistent seal. Due to its fully sealed design and well-shaped body, the RSV is very stable and forms a great seal with its slightly deeper fit. Those sensitive to wearing pressure will have a similar experience here to other sealed in-ears that said. In addition, wind noise isn’t an issue and isolation is strong, great for commute and even travel, especially with foam tips installed. This also means the earphones don’t require huge bass emphasis to sound great in louder listening environments.