Ah yes, I am also always on the lookout for headphones that sound good out of the box or with just some small help.
Most ASR members EQ the crap out of everything but they are tied to gear that can meaning a phone, tablet, PC, laptop or device with parametric EQ.
I too don't want to be dependent on that either.
The new 440A and 840A do look better. The cloth headband won't flake like the original one. Buy some 840 pads and you are very close to the SRH840 (pads are thicker)
Haven't seen any measurements yet.
ART Midi's guy says the bass is more, but next week i will post my direct impression.
The following list is made from the headphones I had, for each one i could draw a fr graph, and mostly beacause of your work:
1-Shure E2C 3/5
2-Sony MDREP50 2/5
3-Sony MDREX700 2,5/5
4-Sennheiser CX300 II 2/5
5-Sennheiser HD380 PRO 3,5/5
6-Sennheiser IE7 4,5/5
7-Sennheiser IE8 3,5/5
8-Yamaha EPH100 4/5
9-Shure SE215 3/5
10-Rha MA450i 2,5/5
11-Rha MA750i 4/5
12-Creative Cal! 4/5
13-Akg K271 mkII 3/5
14-Audio Technica ATHM50s 3,5/5
15-Akg K167 Tiesto 4/5
16-Rha CA200 2/5
17-Meliconi HP100 1,5/5
18-Beats Pro 2/5
19-Akg K550 4/5
20-Sony MDR1R 3,5/5
21-Pioneer SEA1000 3/5
22-Ultimate Ears UE6000 3,5/5
23-Shure Srh940 4,5/5
24-Sennheiser HD25 alu 4/5
25-AKG K81dj 3/5
26-AKG K518dj 3,5/5
27-AKG K545 4/5
28-Sennheiser CX3.00 2,5/5
29-Sony MDR-EX650ap 2/5
30-TDK ST-750 2,5/5
31-Shure SE425 4/5
32-Sony MDR-100AAP h.ear on 4/5
33-Sony XBA-C10 2,5/5
34-Hifiman RE400 4/5
35-Skullcandy Crusher 3/5
36-Sennheiser Momentum 2.0 oe 2/5
37-Philips Fidelio M1 mkII 4/5
38-VE Monk plus 3/5
39-Sennheiser HD598SE 4/5
40-Audio Technica ATH-CKS550i 3/5
41-Akg Y50 3/5
42-Marshall Mid Bluetooth 3/5
43-Philips Fidelio S2 4/5
44-Brainwavz B100 4,5/5
45-Marshall Mode 3,5/5
46-Audio Technica ATH-E40 3,5/5
47-AKG K712 Pro 4,5/5
48-Koss KSC75 4/5
49-Sony MDR-EX110 3/5
50-Akg K518 LE 3,5/5
51-Sony MDR-EX110ap 2,5/5
52-Marshall Mode EQ 3,5/5
53-Beyerdynamic DTX350M 3/5
54-Marshall Monitor Bluetooth 3/5
55-Akg K845BT 4/5
56-Yamaha HPH-PRO500 3,5/5
57-Koss KPH30i 4/5
58-Yamaha HPH-MT8 4/5
59-Koss PortaPro 3,5/5
60-Koss PortaPro X 3,5/5
61-JVC HA-S160 Flats 3/5
62-Philips SHL3505 Fixie 2,5/5
63-Fiio FH1 2,5/5
64-Brainwavz B200 2/5
65-MeeAudio Pinnacle P1 4/5
66-Sony MDR-1AM2 Black 4/5
67-Sennheiser HD58X Jubilee 3/5
68-Koss KSC75 X 4/5
69-Beyerdynamic DT880 Pro 250 Ohm 4/5
70-VE Monk plus mic 3,5/5
71-Audio Technica ATH-M40X 3/5
72-Audio Technica ATH-M40X DEKONI sheep 3,5/5
73-Sennheiser Momentum 2.0i AE 3,5/5
74-Fiio FA1 4/5
75-AKG K612 PRO 4/5
76-Philips SHL3565 3/5
77-Pioneer HRM6 3/5
78-Audio Technica ATH-M50X blue 3/5
79-Beyerdynamic DT770PRO 32 Ohm 4/5
80-Marshall Major III 3,5/5
81-Sennheiser HD300 3,5/5
82-Panasonic RP-HTX80b 1/5
83-Sennheiser HD4.40 BT 3,5/5
84-Sennheiser HD599SE 4/5
85-Pioneer SE-MS7BT 2/5
86-Alessandro MS1 3,5/5
87-Sony WH-H900n h.ear on 2 2,5/5
88-Sony MDR-7506 3/5
89-Beyerdynamic DT770PRO 80 Ohm 4/5
90-Marshall Minor II BT 4/5
91-AKG K371 4,5/5
92-AKG K245 3,5/5
93-AKG K240MKII 4/5
94-Beyerdynamic DT990PRO 250 Ohm 2,5/5
95-Beyerdynamic DT880PRO 250 Ohm 4,5/5
96-Sennheiser HD2.10/HD100 4/5
97-Sony MDR-1AM2 Silver 4/5
98-Brainwavz Koel 4/5
99-Apple AirPods Pro 4,5/5
100-Creative Aurvana SE 4,5/5
101-Tin HiFi T4 4,5/5
102-Beyerdynamic DT770 PRO 32 Ohm 4/5
103-Philips SHP9500 4/5
104-Koss KSC75 Yaxi Pads and Porta Pro's headband 4,5/5
105-Koss Porta Pro 4/5
106-AKG K712 PRO Slovakia 2020 (Defective)
107-Sennheiser HD6XX balanced 4/5
108-AKG K361 2/5
109-AKG K371 4,5/5
110-Apple Earpods 3/5
111-Sennheiser HD380 PRO 3/5
112-Sennheiser HD25 Basic Edition ‘20 3/5
113-Sennheiser HD600 2019 4,5/5
114-Sennheiser HD25 <2019 3,5/5
115-AKG K275 3,5/5
116-Beats Solo Pro 3,5/5
117-Moondrop Starfield 4,5/5
118-Sony MH-755 4/5
119-Sennheiser HD206 2/5
120-Philips Fidelio X2HR 3,5/5
121-Beyerdynamic dt770 80 Ohm rodata 4,5/5
122-Moondrop Aria 2 4,5/5
123-Sony MDR-7510 4/5
124-Sennheiser HD560S 4/5 (dective
125-Beyerdynamic DT880 Edition 250 Ohm 4/5
126-Beyerdynamic DT1990 PRO 4,5/5
127-Audio Technica ATH-M50X Sheep Pad 3,5/5
128-Sennheiser HD25 Copper Cable 4/5
129-Sennheiser IE40 PRO 2,5/5
130-AKG K702 4/5
131-AKG K702 memory 4,5/5
132-Hifiman Sundara 5/5 (defective)
133-AKG K371 revision 4,5/5
134-Audio Technica ATH-R70X 4,5/5
135-Moondrop Blessing 2 occ cable 4,5/5
136-Sennheiser HD560S 5/5
137-Etymotic ER2SE 4,5/5
As you can see I put a small number just to rank them. Obviously these are models I bought and sold during my 11 years in the hobby. The evaluation is mostly related on the tonal balance and the tolerable deviation to achieve sone technical illusions like soundstage and transients.