CS-255 CD Hi-Fi Mini System

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Introduce Your iPhone 5 to the Onkyo Sound

Give your music over to the CS-255's punchy amp and separate speakers for an authentic stereo experience.
The CS-255 CD Hi-Fi Mini System combines deeply satisfying audio quality that's beyond what you would expect
from such a compact and affordable system with playback support from a wide range of sources.

Dock It

Dock your iPhone 5, iPod touch® (5G), or iPod nano®(7G) via the Lightning Connector and recharge the device while you listen.The receiver automatically detects your device, selects dock input, and allows you to use the system remote to quickly navigate to your desired track. Audio signals are transported in pure digital form-bypassing the docked device’s analog conversion and gain circuits—for noticeably clearer, deeper, and more realistic sound.

Connect, Charge, Play via USB

Users of legacy iPhone and iPod models can link up in moments via the front-panel charging USB port, which also enables direct-digital audio transfer on these devices. If your smartphone or tablet features a mini-USB port, you can access the MP3 files stored on the device as well.You can also plug in a flash memory drive and use the system remote to select an MP3 library—no hassle, and no fuss.

Clean and Efficient Digital Amplifier

As well as being more energy-efficient than Class AB designs, this digital amplifier produces remarkably clean, detailed sound. Onkyo’s low-noise circuit topology reduces distortion across a wide frequency bandwidth, revealing new layers of depth and detail in your favorite recordings.

Super Bass Function

Sometimes music calls for a little extra bass punch. The two-mode Super Bass function on the CS-255 gives a welcome boost to the low-frequency band, adding just the right amount of heft to bass guitar and kick drum without sounding distorted, harsh, or boomy.

Amplifier/CD Player Features
Power Output Stereo (6 Ohms, 1 kHz, 10% THD, 2 ch 15 W/Ch
Digital Amplifier Circuitry for Clear, Powerful So
CD, CD-R, CD-RW, and MP3 Encoded CD Playback
USB Port- iPod/iPhone, Smartphones, Flash Drives
Super Bass Function
Number of Repeat Modes 2 (Disc/Track)
Number of Play Modes 3 (Normal/Random/Repeat)
Analog Audio Input for Media Player Connection
Headphone Jack
Tone Control (Bass/Treble)
iPod/iPhone Charging Dock Features
Charging Dock w/Lightning Connector
Direct Digital Connetion for Clearer Sound
iPod/iPhone Control w/Supplied Remote Controller
iPod/iPhone Auto Selector, Play Timer, Sleep Timer
USB Connection Features
Made for iPod/iPhone
Recharges iPod/iPhone
iPod/iPhone Control w/Supplied Remote Controller
MP3 Playback via Flash Drive, USB-Smartphones
Other Features
Number of FM/AM Presets 60 (30 + 30)
Program Timer (Everyday)
Sleep Timer
Battery-Free Memory Backup
Display Dimmer (Normal/Dim)
Remote Control
Speaker Section
Type D-T15, 2-Way, Bass Reflex
Woofer 3 15/16" (10 cm) Cone
Tweeter 3/4" (2.0 cm) Balanced-Dome
Non-Parallel Sides Prevents Internal Standing Wave
Solid Construction, Fit, and Color Matched Finish
Magnetically Shielded
Nominal Impedance 6 ohms
Max. Power 30 W
Frequency Response 55 Hz-50 kHz
Power Output15 W + 15 W (6 Ohms, 1 kHz, 10 % THD, FTC)
Total Harmonic Distortion + Noise0.5% (1 kHz, 1W)
Damping Factor60 (Front, 1 kHz, 8 ohms)
Input Sensitivity and Impedance1000 mV/47 k-ohms (Line)
Frequency Response50 Hz–20 kHz/+0 dB, -3 dB
Tone Control±10 dB, 100 Hz (Bass) ±10 dB, 10 kHz (Treble) +4 dB, 80 Hz (Super Bass 1) +8 dB, 80 Hz (Super Bass 2)
Signal-to-Noise Ratio84 dB (Line, IHF-A)
Speaker Impedance6 ohms–16 ohms
Tuning Frequency Range530 kHz–1,710 kHz
FM Preset Memory30 Stations
AM Preset Memory30 Stations
Power SupplyAC 120 V, 60 Hz
Power Consumption30 W
No Sound Power Consumption7W
Standby Power Consumption0.35 W (iPod/iPhone not connected)
Dimensions (W x H x D)8 7/16" x 3 15/16" x 10 5/8" (215 x 100 x 270 mm)
Weight5.5 lbs. (2.5 kg)
Speaker Type2-Way, Bass-Reflex
Woofer3 15/16" (10 cm) Cone
Tweeter3/4" (2.0 cm) Balanced-Dome
Frequency Response55 Hz–50 kHz
Crossover Frequency4.5 kHz
Output Sound Pressure Level82 dB/W/m
Max. Input Power30 W
Nominal Impedance6 ohms
Dimensions (W x H x D)5 1/8" x 8 1/4" x 6 3/4" (130 x 210 x 172 mm)
Weight3.5 lbs. (1.6 kg)

Purchase the CS-255

ONKYO has chosen a select group of Authorized Dealers which have agreed to provide outstanding service to our customers. Please check the Authorized Internet Resellers page for even more buying options.

Find your Local Dealer