S/550 is the gateway to the Serie S line, delivering the speed, depth, and nuance that define REL’s performance ethos. While its larger sibling, the S/850, sets the ultimate benchmark, the S/550 carries forward many of the same design innovations—ensuring the essence of Serie S is fully realized in a more compact form.
The results are remarkable: S/550 offers lightning-fast transients, deep articulate bass, and tonal balance that breathes life into both music and film. Its ability to combine authority with refinement makes it an ideal choice for those seeking a true high-end experience in medium-sized systems, with performance that consistently exceeds expectations.
For those seeking a more bespoke finish, S/550 is available with an optional Premium Wood Grille upgrade for added warmth and individuality.
REL S/550
Type
Front-firing active driver, down-firing passive
Active Driver Size & Material
10 in. (250mm) long-throw, CarbonAlloy™ cone structure, die cast alloy chassis
Passive Radiator Size & Material
12 in. (305mm), Carbon/Carbon flat cone structure, steel chassis
Low Frequency Extension
-6 dB at 19Hz
Input Connectors
High Level Neutrik Speakon, Low Level (2) RCA, (1) LFE RCA, (1) LFE XLR
Output Connectors
High Level Neutrik Speakon, (1) Low Level RCA, (1) LFE RCA or (1) LFE XLR
Power Output
550 watts (RMS)
Amplifier Type
Linear Class D
Wireless Capability
REL AirShip Direct (sold separately)
Dual Parametric Filter
N/A
Finish
Piano Black Lacquer, Gloss White Lacquer 8 coats
Protection System
Fully Electronic Set Safe
Yes
D.C. Fault
Yes
Output Short
Yes
Mains Input Voltage
220-240 volts, 110-120 volts for certain markets
Fuses
8 Amp semi delay 220 volts operation, 15 Amp semi delay 120 volts operation
Mains Lead
Yes
Neutrik Speakon
Yes (10 Meters Nominal)
Interconnect
-
User Manual
Yes
