TOPIC DESCRIPTION As a natural continuation of the previous SBAF thread originated by me (Neutral(ish) headphones), due to a significant progress made, this topic intends to track my audiophile journey focused on neutral(ish) headphones. I hope others will find useful information here too! Copy/pasted from the other thread: "In simple terms, by 'neutral' I mean subjectively as true to the source as possible with headphones, ideally also confirmed objectively (e.g. by measurements). This, from my current understanding, in practice involves a suitable combination of frequency response, distortion characteristics, internal construction/damping and possibly other parameters too." ============================================== TOP CONTENDERS SO FAR: 1] TONALITY (frequency response): First place: Audeze LCD2 Classic (vegan) Runner-up: Sennheiser HD650 (stock) 2] TIMBRE (overall sound character): First place: Audio Zenith PMx2 rev2 (stock) Runner-up: Sennheiser HD650 (stock) ============================================== APPROACH TO MEASUREMENTS: REW -> Schit Fulla 2 -> MiniDSP EARS chain setup according to instructions from MiniDSP for 90dB SPL at 1kHz. Customized FR compensation curve used, combining HPN and HEQ curves from MiniDSP with some customizations. Both sides of headphones are setup identically prior final measurements (headband extension, cups angle, earpad mounting, ...). No additional adjustments to control seal (artificial pressure, ad hoc fixture, ...) are used unless clearly stated. Once optimal headphone setting is found, both channels get measured at least 5 times at different positions against MiniDSP EARS and the most visually similar graphs are selected = no averaging is used. Frequency response graphs are published with 1/12 octave smoothing for 15Hz to 15kHz range, including visual comparison with Sennheiser HD650 (stock) for those in doubt regarding my compensation curve. Other types of graphs are not published unless interesting enough from my perspective. I only find FR graphs to be truly understood enough to provide a consistent value for this kind of thread. Experience from my previous measurements, using in-ear mics, is applied here too. I actually prefer to measure at the outer entry of my own ear canal ( = in-ear measurements) rather than near eardrum of a dummy head (MiniDSP EARS). EARS is more convenient in the long term though. MORE ON THE COMPENSATION CURVE: The primary goal is to supply a truly effective compensation curve (HCUSTOM), to achieve that straight line = neutral response. The default curves provided with MiniDSP EARS (HEQ and HPN) are utilized as much as possible across the frequency spectrum, with few "systematic" adjustments. To sum up, upper mid to low treble region is adjusted since even the HEQ curve is a bit too "much" there based on my findings. Peak around 4.5kHz and resonance around 50Hz are artifacts present in some measurements due to EARS that cannot be fully avoided based on my knowledge. If in doubt, you can still rely on a visual comparison of each measured headphone with Sennheiser HD650 (stock). MORE ON UTILIZATION OF MEASUREMENTS: Do NOT look too much into subtleties as there are way too many variables involved in headphone measurements, leading to significant (multiple dB) discrepancies among measurement rigs or even measurement sessions on a single rig. The more experience you have with measurements, the more cautious you are about them. Therefore only utilize frequency response measurements as a general guideline to assess tonality. (Enough bass? Deep enough bass? Enough mid bass compared to mids? Linear low to mid mids? Present upper mids? Too bright or peaky treble? Some significant trough located in treble? Some significant resonances visible? Is the overall response rather smooth, or ragged?) Do NOT purchase headphones solely based on a single frequency response graph. Always try to consult other sources of measurements and correlate them with subjective impressions posted by people. Other measurement sources I recommend to use: RAA @Hands RTINGS (bass is typically a bit too rolled-off though) DIYAH (bass is typically a bit too rolled-off though) ============================================== REVIEW LIST: Audeze LCD2 Classic (vegan) Audio Zenith PMx2 rev2 (stock) Sennheiser HD650 (stock) Beyerdynamic DT880 Edition 600 Ohm (stock) Hifiman Edition X V1 (stock) Sennheiser HD600 (stock) Fostex TH7 (stock) Sennheiser HD660S (stock) Koss ESP950 (stock) Sony MDR-MA900 (stock) Verum 1 (stock) ============================================== NOTE: This thread is identifying top neutral(ish) headphones for your consideration rather than providing exhausting details on every assessed product. The reviews are therefore concise and focused accordingly.