Olympus M.Zuiko Digital 17mm 1:1.8 (off-topic)

Specs

wide-angle / prime lens,

Micro Four Thirds mount,

17mm/F1.8 (34mm equivalent on 35mm camera),

F1.8-F22 aperture,

9 elements / 6 groups lenses,

2 Aspherical, 1 HR, 1 DSA glass elements,

7 diaphragm blades,

AF / MF, snapshot focus,

minimum focus 0.25m,

non stabilized,
46mm filter mount,
mm 58Øx36, kg 0,12.

B&W Preference P5

Specs

3-way configuration,

bass reflex via two front-firing ports,

Cobex cone bass B&W ZZ9776 165mm, die cast frame, rubber surround,

Kevlar cone bass/midrange B&W ZZ3328 165mm, die cast frame, rubber surround,

metal dome tweeter B&W ZZ3123 26mm, magnetic fluid cooled,

30-200W@8Ω,

32-20000Hz ±2 dB,

sens. 90 dB,

mm 200x905x285, kg 14,5.

Musical Fidelity P140

Specs

2x70W@8Ω/20-20000Hz,

2x2 Hitachi 2SJ50 2SK135 power transistors,

4x6800µF Rubycon filter caps,

Rubycon, ICW, Ero, Evox components,

toroidal power transformer,

2 line in,

2-steps sensibility,

mm 408x70x250, kg 6,5.