Fit The CL2 are fairly small IEMs, that require deep insertion and some tip rolling to find the best isolation and SQ. The RHA CL2 returns with some similarities to the divisive CL1, but it’s got a lot more cool stuff going on. Demo units courtesy of: Frequency Response measurements and graphs for In-Ear Monitors (IEMs) and earphones. RHA CL2 paired with a Sony WM1A. PW Audio 1960s 2 wire 4.4mm copper cable. RHA CL2 paired with a Sony WM1A. In-Ear Fidelity. Check back once we find a pair to test. RHA commented on this, saying that they settled on this tuning because this upper mid-range sounded overshadowed by the lower frequencies without it. The CL2 Planar in-ear headphones offer a wide 16 Hz to 45 kHz frequency response, 15 ohms impedance and 89 dB sensitivity RHA View gallery - 6 images To start, RHA supplied a basic frequency response for the CL2: CL2 Frequency Curve (supplied by RHA) The peak around the 2k-6k exactly goes along with what I noticed. It was originally published in October 2018 on headfi. Full size : Magnepan 1.7i, two Bryston 7BST monoblocks, RME ADI‑2 DAC. Home; Rankings. RHA has designed an impressively bite-sized planar magnetic driver for the CL2. Fit and finish are immaculate, the hi-fi pedigree is strong, and the personal sense of exclusivity when worn in public is second to none. Ears are beautiful things, but we hear with our brains and brains can be pretty darn stupid. Thus, so long as the official frequency response chart is accurate, the price tag is beyond justified. For example, RHA’s audio products produce frequency ranges between 16Hz-22kHz, meaning that they are able to produce the full spectrum of frequency responses which humans are able to detect. Frequency range: 16 Hz – 45,000 Hz; Disclaimer I have purchased and paid the full retail price for the CL2, this is not a sponsored review. Some axioms: Frequency response isn't everything, but it is important. If the tuning works for you, there's really not much else to criticize about these headphones; if the tuning sounds off to your ears, then nothing else really matters. Because many planar magnetic headphones have a more even frequency response, many listeners report a more clear sound (due to low distortion and no over or under-emphasis). Engineered with Planar magnetic technology, these CL2 headphones by RHA offers fully portable, high-fidelity audio. If you didn't volume match, how can you be sure you heard a difference? But you can't underestimate the importance of that frequency response. Reddit. If it's not on the list, it doesn't exist. However, we can’t make any statements on what the CL2 sound like just yet. In audio equipment, the frequency response describes the ability of a product to reproduce sound of different frequencies. It helps to note that included in the package is a neckband-style Bluetooth MMCX cable with a 12-hour battery life, as well as 3.5 and 2.5 cables. Boasting injection-moulded ceramic housing with MMCX detachable connections, this pair comes with 2 cables and a 12-hour SecureFlex Bluetooth neckband for both a wired and wireless option. PW Audio 1960s 2 wire 4.4mm copper cable. RHA CL2 Planar Bluetooth ($899 USD) ... With their lush frequency response and exacting detail, they make a strong case for being the best headphones in the closed-back category. RHA CL2.