€599 – €649
introducing OB–4, magic radio. the incredible sounding portable hifi stereo with line-in, wireless audio, and the evolution of radio. OB–4 memorizes everything you play on an endless looping tape. rewind the radio and remix anything. comes with a folding handle that doubles as a stand. ultra power efficient with up to a week of music listening.
introducing OB–4, the portable high fidelity loudspeaker with two 4” bass drivers and a pair of neodymium tweeters that deliver crystal clear, open natural sound with 38 watts per channel — that’s around 100 decibels
of incredible sounding stereo. listen using line input, bluetooth, FM radio and disk. the interface is minimal, with only the things you really need. yet if you look below the surface, there’s a lot more than meets the eye.
have you ever wished you could instantly rewind when listening to the radio, to hear the title of the song just played? OB–4 continuously memorises everything you listen
to on an endless looping tape*.rewind, time-bend and loop at the flick of your fingertips. on purpose or by accident. instant rewind on radio is just one of the OB-4’s magic tricks.
*ROLLING 2 HOUR RECORDING
four tailor-engineered speaker elements deliver pure quality sound and a stereo field that fills the entire room. a flow-optimised bass reflex duct delivers deep natural bass.
how about normal radio listening for a week without charging? the high capacity lipo battery delivers about
8 hours of noise at max volume, or an average of 40 hours on a single charge.
the OB–4 hardware platform supports both high-definition bluetooth classic and bluetooth low energy standards. workswith ortho remote for wireless volume control.
we’ve spent years fiddling with the antenna so you won’t have to. and for those tricky listening places, we’ve included a fine-tuned smart spiral antenna that neatly integrates in the handle.
BRUSHLESS MOTOR, HALL EFFECT SENSOR & INTELLIGENT MOTOR CONTROL ALGORITHM.
use your fingers to grab, spin and interact with the sound. digital-motion controlled volume knob and tape reel. we call it the next level of user experience.
if you skip the traditional inputs like line in, bluetooth and FM radio, you end up in disk mode. this is where we will continuously develop new experimental features for the OB–4. it’s our public research space,
where we allow ourselves to explore and prototype everything that this media-instrument, as we like to call it, can become. for now, there are three functions on the disk; ambient, karma and metronome.
zone out to a drone generatedby snippets of a radio broadcast.
high def stereo recording.1 beat per minute, up to 800.
30 in 1 musical mantra box.your spiritual companion.
designed to be played outdoors, in public spaces and at high volume; carried on one shoulder with speaker elements facing the head. note: it is assumed that passers-by share the same musical taste.
or why not give it a home in your kitchen? with any luck, the iconic handle makes it a breeze to carry anywhere, and can even be used as a stand for a more relaxed listening position.
made in london by our friends at bill amberg studio. the OB–4 leather bag is the elegant protection you need when you walk the street in that high fashion district in a metropolitan city somewhere. or, when you just want to round off the edges of OB–4 and feel the soft touch of genuine leather.
ultra durable cow hide is hand stitched along four edges for a perfectly tailored and acoustically transparent fit. the detachable strap can be adjusted to several lengths. each of these first edition bags are unique and hand marked with an edition number.
optimized bass reflex duct and semi unified chamber.
52 – 25000 Hz.
232.5 x 284 x 57.5 mm
amorphous polymer glass fibre reinforced pc and milled aluminium.
fine pitch tweeter grille, gel dampened handle, custom direct drive volume knob and tape dial.
max spl @ 1m stereo configuration
92 db unsupported wideband
bass capability @ 1m
104 db SPL supported
active crossover frequency
stereo 2 + 2
high efficiency ferrofluid cooled neodymium driver.
long throw high power capacity neodymium driver
2 x 38W ultra high efficiency class D
Bluetooth® classic (AAC)
Bluetooth® 5 LE
3.5 mm stereo in
(2.8Vpp for 0 dBFS)
normal volume fm: 72 hours
bluetooth high volume: 8 hours
general power requirements
ac 110-240v 50~60hz
universal built-in power supply
main power cable
OB–4 (ortho book 4)
country of origin: