If you want isolation-focused headphones for running, choose Metrophones Studio Kans Isolation; if you need a recording interface and headphone bundle for making music, choose Kellards Focusrite Scarlett 2i2. For the running use case, the Metrophones is the clear fit: it is a headphone product with sound-isolation features, while the Kellards package centers on connecting microphones and instruments to a computer. Neither spec sheet establishes that either is designed specifically for exercise.
If you want isolation-focused headphones for running, choose Metrophones Studio Kans Isolation; if you need a recording interface and headphone bundle for making music, choose Kellards Focusrite Scarlett 2i2. For the running use case, Metrophones is the clear fit: it is a headphone product with sound-isolation features, while Kellards centers on connecting microphones and instruments to a computer. Neither product’s listed features establish that it is designed specifically for exercise.
• Metrophones Studio Kans Isolation: A dedicated over-ear headphone with sound isolation up to 29 dB, a volume control and an on/off switch. Its trade-off: the supplied cable is 9 feet long, and the listed features do not identify it as a running-specific design.
• Kellards Focusrite Scarlett 2i2: A USB-C recording interface bundle with two channels, microphone preamps, recording software and headphones. Its trade-off: it is a recording setup, not a straightforward headphone choice for running.
• Metrophones is for: Someone choosing headphones first, especially for listening in a noisy recording environment.
• Kellards is for: Someone recording vocals or instruments, podcasting or streaming from a computer.
Metrophones is the more direct choice if your priority is a pair of headphones rather than a recording rig. It has an over-ear design, a 3.5 mm jack, a volume control and an on/off switch. Its stated sound-isolation capability reaches up to 29 dB. That makes isolation the feature to focus on when comparing it with a bundle built around recording equipment.
The sheet also lists a 20 Hz–20,000 Hz frequency range and a 9-foot heavy-duty replaceable stereo cable. Those details may suit a fixed listening or recording position, but the long cable is worth considering if you plan to move around. For running, I would be cautious: the listed features do not establish that the headphones are intended for exercise, and the cable could be awkward in motion.
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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-18 · 6 min read · Independent comparison
Kellards is a different kind of purchase: a bundle built around the Focusrite Scarlett 2i2 4th Gen USB-C audio interface. It has two channels and is described for recording, podcasting and streaming. The listed compatible devices include a microphone, personal computer, headphones and electric guitar, so its purpose is connecting audio sources to a computer-based workflow.
For recording, the feature set is more relevant than the included headphones alone. The interface lists microphone preamps with up to 69 dB of gain, a maximum sample rate of 192 kHz and a dynamic range up to 120 dB. Auto Gain is intended to help set input levels, while Clip Safe is intended to reduce the risk of clipping. Air mode is described as adding presence to vocals and guitars, and Loopback can bring audio from other computer applications into a recording.
This is the better fit if you want to record or stream and need an interface, software and headphones in one package. It is a poor match if you simply want headphones to wear while running: the central product is a USB-C interface, and the package is oriented around microphones, instruments and a computer. A search for “hifi stereo sleep headphones for running” points toward a specific wearable use that the listed Kellards features do not address.
• Best for a dedicated headphone purchase → Metrophones Studio Kans Isolation. The product is a pair of over-ear headphones with a 3.5 mm jack, volume control and on/off switch.
• Best for recording vocals or instruments at a computer → Kellards Focusrite Scarlett 2i2. Its two-channel USB-C interface is designed for microphones and instruments, with computer compatibility.
• Best for stated sound isolation → Metrophones. Its listed isolation reaches up to 29 dB; the Kellards sheet does not specify a comparable headphone-isolation figure.
• Best for setting recording levels → Kellards. Auto Gain is designed to help set levels, and Clip Safe is intended to prevent clipping.
• Best for a long, fixed listening connection → Metrophones may suit that setup. Its 9-foot replaceable stereo cable gives room to connect while seated, though that length may be inconvenient when moving.
• Best for adding computer audio to a stream or recording → Kellards. Loopback supports mixing audio from other apps running on the computer.
• Best match for running among these two → Metrophones, with a caveat. It is the headphone-focused option, but neither listing confirms an exercise-specific design; its long cable deserves particular thought.
• Best for someone who needs headphones and a recording interface together → Kellards. The bundle includes headphones alongside the interface and recording software.
My Verdict
For running, I would choose Metrophones because it is the only one of these two products centered on headphones, and its listed isolation feature gives it a clear listening role. I would still be careful about the 9-foot cable, and I would not assume it is made for exercise.
If I were buying to record vocals, instruments or a podcast at a computer, I’d choose Kellards instead. Its interface, recording tools and two-channel setup make it the more purposeful package for that job.
Metrophones is the more relevant choice because it is a headphone product with sound isolation. Kellards is primarily a USB-C recording interface bundle. Neither product’s listed features confirm that it is designed specifically for running.
Its listed sound-isolation capability is up to 29 dB. That is the stated figure; the product information does not provide a direct comparison with the Kellards bundle’s headphones.
No. The bundle centers on a two-channel USB-C audio interface for recording and streaming, and includes headphones, software and other recording accessories. Its features are aimed at working with a computer, microphone or instrument.
Choose Kellards if you need an interface for recording vocals or instruments. It lists microphone preamps, Auto Gain, Clip Safe, Air mode and recording software. Metrophones is the more direct option if you need headphones rather than a computer recording setup.
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