They were too boomy for me. For this review, I used the Hifiman EF100 amplifier – a $499 … Also distortion is quite low and it shows why it had been the top model of Sennheiser for quite some time. The initial rise reaches the 0dB line very closely and shows there is nothing ‘slow’ about the HD650’s driver at all. As evidenced by these specs, the HD650 offers a wide frequency range, low distortion, and a whopping impedance of 300 ohms. But overall, in alot of ways these are still very similar in sound. It feels less focused, but wider sounding. Sennheiser‘s former flagship, the HD650, is still an excellent headphone today and worth owning. Most measurement sites have some smoothing applied which ‘irons flat’ sharp peaks and ‘wiggles’. 3rd harmonic distortion of the HD600 is lower than that of the HD650. About Us Page, If none of this is convincing enough, then, 6. The measurement rig has a relatively high 2nd harmonic distortion so numbers below 0.2% will be there in reality above 200Hz. The thinner soundi… Headphones with a good sub-bass extension have a (close to) horizontal line after the initial rise. (website links), Foobar 2000 for Dummies (Part 1) – General Setup, Foobar 2000 for Dummies (Part 2) – Playing DSD – New SACD plugin (0.9.x and 1.x.x Series), power, efficiency, levels, balanced, impedance. There is less upper treble (around 15kHz) and the upper mids between 1kHz and 3kHz is boosted a few dB. … Impedance: 300 Ω From 5khz to >20khHz with very little sharp peaks and no dips. Instruments and vocals are clear and crisp, and the open design gives these headphones a spacious soundstage. Driver size: 40mm (38mm membrane) Bring up the topic of HD600 vs HD650 headphones and you may end up losing a friendship. This HD650 seemed a bit ‘darker’ than what I have seen earlier so compared these with HD650’s measured earlier. Put your mouth over the middle part of the rearside of the driver. As this headphone will peak the interest of HD660S owners below some comparative plots with a current (2107 stock) HD650 and a HD660S. Type: Over ear, open Had an HD650, upgraded to the HD660s, didn't like it an purchased an HD800s (used)... here are my impressions inside ... ultimately has a more resolving frequency response. As this is an open headphone distortion levels and spectrum plot performance may thus be better in reality than as shown on the plots. Time for some measurements to show the differences between the 2 pads (right channel only). The HD600 has a more balanced frequency response (one of the best, in fact), the HD650 is more low-end heavy. Usage: Home, studio. 2,2 Kg ... XLR CONNECTION CABLE HD650. Ok, here it is. You’ll definitely want to invest in an amplifier to drive this baby. A HD650 from 2017 (silver screen) and the fixed but ‘veiled’ HD650 (2014) below. I do not use smoothing because some info about sound quality is lost when plots are smoothed. On the violin soloist passages, the HD600 is a clear favorite, but when the drama comes, I am not quite as sure on which is better. Below a direct comparison between HD600, HD650 and HD660S but the vertical (dB) scale is not 5dB per division but 2dB/div so ‘expanded’ in view to show the differences a bit better. Bass sounds ‘tight’ and ‘dynamic’ and integrates seamlessly with the mids. An early (black screen) HD650 fitted with new pads. Careful analysis and hours of listening go into our ear pads and we stand by our models as the best of the best as far as replacement ear pads go. The Sennheiser HD650 have the same design as the HD 600 with a few minor differences. The HD660S has the ‘warmth’ of the HD650 but less clarity/presence and slightly less treble. Gently apply some pressure by blowing a little and the dome pops back in original position. Quite possible the older pads may create a slightly better seal on some heads (depending on bone structure) as well. ... great frequency response, and the extremely lightweight body that helps the users enjoy the music for hours without any fatigue. This is described HERE in more detail. When the HD 560S are more readily available I'll be curious to hear more opinions about how these stack up to other 5- and 6-series headphones that are designed for flat frequency response (580, 600, 660S? HD650’s pad. This is considered the ‘veiled’ version and indeed can sound slightly subdued in the highs. Even the older black screen HD650 (fitted with new pads) has about 2dB more presence & treble than the veiled HD650. From 600Hz up the headphones are very similar. More about the pads and ‘veil’ further down. Let’s look at the basic stats to break ’em down. Sennheiser HD600 vs HD650. S.P.L. As can be seen the HD600 has slightly less midbass hump. Max. NO SMOOTHING is applied to the shown plots. Below the frequency response of the HD650 with old pads Left, Right, more extensive measurements of several possible modifications Efficiency: 101 dB/1mW (105dB/1V) If you Google some variation on "HD650 vs HD600," you'll hear over and over that the 650 is "bassier" or "darker." When placed on the test rig this became quite evident though. The fix for this is quite easy. Deviations in different severities at different frequency bands have an effect on the sound character. 形式 : オーバーヘッド(アラウンドイヤー)型 開放・ダイナミック型: 周波数帯域 : 12Hz~38,000Hz: インピーダンス Below the result of this small test.This test shows that the newer pads do not have any different absorption or other acoustical effects and the differences in sound signature and SPL between the two pads is now the same. HD600’s pad. Note that this headphone was measured at  where  background noises were present in the demo room. While the HD600/650’s pad mimics the … The CSD showed no differences other than the small level differences. The HD 650 and its predecessor, the HD600, are both open and dynamic stereo headphones with highly optimised transducer systems. The comparison between the HD600 and HD650 is often made. Accessories: 6.3mm to 3.5mm adapter cable, presentation box, Below the frequency response of the HD650 (Left, Right) 2017 version. Considering the mounting plate was also included (which is 5mm) the actual pad thickness reduced from 25mm to 15mm a 40% reduction. This also means that when replacing a blown driver and ordering a new one chances are you may be getting a driver that isn’t matched with the still O.K. The difference in sound is remarkable, no excessive warmth but pure realism, excellent and VERY deep and tight bass and an unrivalled midrange with a present and NEVER sibilant smooth and extended treble. The question of course is whether or not the old pads had been (much) stiffer when new which is quite likely as the foam inside the pads deteriorates over the years. Blog Aug 30, 2020. Collapsible: No Lot’s of people are wondering how the current (silver screen) HD650 compares to the (silver screen) HD600. The HD650 offers a warmer and more relaxed overall sound. A combined CSD for both channels (stock HD650 NOT via the Kameleon amplifier), very clean and fast decay ! back to Sennheiser 0.3 Hz to 100 kHz (-3 dB) THD, total harmonic distortion < 0,001 % Weight. By lack of oscilloscope shots (not enough time to measure that) below a step response plot of the HD650 (Left channel)The step response shows the lack of ‘bottom end’ as evidenced by the downwards sloping line. In the case of the Shure srh1840 vs Sennheiser hd650, it is even more difficult to decide. Above 10kHz the HD650 has about 1.5dB more output. They are suited for HD545 / HD565 / HD580 / HD600 / HD650 / HDI850. This is because both headphones are of excellent quality, the only difference may just have to be the kind of music you will be using the headphones to listen to. 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