Edifier R1280T          AudioEngine A2+         Marshall Acton 2        marshall stanmore 1     marshall stanmore 2     Marshall Woburn         Bose SoundTouch 20/3    Bose SoundTouch 30/3    Sonos Play 5
Amplifiers                      2x 21W                  2x 30W                  30W + 2x15W (Class D)   50W  + 2x15W            50W + 2x15W (Class D)   50W + 2x20W             2x 40W (guess)                                   6x ?
Range (Hz)                      65 - 22k                                        50 - 20k                50 - 20 kHz             50 - 20k                35 - 22k                                                                 30 - 20k (?)
Sound Presure (dB at 1m)                                                        98                      100                     101                     110                     105
SNR (> dbA)                     85                      95                      90                                                                                      
Distortion                      0.05%                                                                                                                                   
Sensetivity (mV)                700 - 800                                                                                                                               
Impedance (K ohms)                                      10                                                                                                              
Principle                                                                       Bass-reflex                                                                                                                     
Protocol                                                 USB, Jack, RCA         BT5 (no aptX), AUX      BT4+EDR+aptX,Jack/RCA   BT5+aptX,Jack/RCA       BT4+EDR+aptX,Jack/RCA  BT4 (aptX?), WiFi, Eth, RCA                      WiFi, Eth, Jack
Weight (kg)                     4.9                                             2.85                    5.10                    4.65                    7.9                    3.1                                              6.3

Sony MHC-V11C, GTK-XB5
Marshall Tufton
Bose SoundTouch 20 Series III   - Bose account required to setup speakers!!!! Connection issues. However, will work as BT without setup.
Sonos Play 5                    - Only WiFi, no other ports. Also some complains on auto-updates.
Edifier AirPulse A300

Conclusions
    - Woburn 1 is definitively sounds much better than Stanmore 2 if put side-by-side.
    - Bose SoundTouch 20 sounds different. Probably better than Stanmore, but not as good as Woburn (it is 3-times smaller). Easiest style to notice the quality differnece is Johny Cash it seems.
    - I don't see that much difference between SoundTouch 30 and 20 (but I see difference with SoundTouch 10)


Bluetooth 5 vs 4
    - Longer data range
    - Lower power consuption
    - Twice the spead, but no improvements over EDR


The most common drivers are as follows (best are 3-way include subwoffer, tweeters, and something in mid range):
•    Super tweeter: 10.000 to 20.000 Hz
•    Tweeter: 2.500 to 20.000 Hz
•    Mid-tweeter: 400 to 20.000 Hz
•    Midrange driver: 400 to 2.500 Hz
•    Midbass driver: 40 to 2.500 Hz
•    Bass driver: 40 bis 400 Hz
•    Subwoofer: 30 bis 150 Hz
•    Full-range driver: 40 bis 20.000 Hz