Denon AH-C751 User manual

AH-C751 / AH-C551 / AH-C351
In-Ear Headphones
New model information
To Those of You Who Yearn for Decent Sound Quality
You walk happily listening to the music you love. You are enveloped in the artist's world wherever and whenever you like. But, don't you some-
times wish the quality of the sound was better? The Denon AH-C751, AH-C551 and AH-C351 are inner ear headphones that faithfully repro-
duce the original sound with a quality that is always satisfying. These headphones feature an acoustic optimizer structure that ensures ideal
sound characteristics, and the canal-type design fits snuggly into your ears.
AH-C751
Silver
AH-C751
Black AH-C551
Black
AH-C351
White
AH-C351
Black
Bullet points AH-C751
Machined aluminium housing and plug, to repro-
duce dynamic sound.
Acoustic optimizer structure, to bring out ideal
acoustic characteristics.
•Acoustic optimizer
Optimum acoustic charac-
teristics are achieved by
adjusting the sound pres-
sure balance in front of and
behind the diaphragm.
• Highly rigid machined aluminium housing and
plug achieve dynamic sound playback.
• Equal cable lengths are used for left and right
channels to maximize sound quality.
• Canal-type inner ear headphones reduce ambient
noise and lets you enjoy the music more.
• Tangle-resistant cable is also easy to store.
• Gold-plated stereo mini jack
Bullet points AH-C551
Canal-type design, to bring the music directly into
your ear.
Acoustic optimizer structure, to bring out ideal
acoustic characteristics.
•Acoustic optimizer
Optimum acoustic character-
istics are achieved by adjust-
ing the sound pressure bal-
ance in front of and behind
the diaphragm.
•Machined aluminum housing is used for optimum
sound quality and strength.
• Canal-type inner ear headphones reduce ambient
noise and lets you enjoy the music more.
• Tangle-resistant cable is also easy to store.
• Gold-plated stereo mini jack
Bullet points AH-C351
Canal-type design, to bring the music directly into
your ear.
Acoustic optimizer structure, to bring out ideal
acoustic characteristics.
•Acoustic optimizer
Optimum acoustic character-
istics are achieved by adjust-
ing the sound pressure bal-
ance in front of and behind
the diaphragm.
• Canal-type inner ear headphones reduce ambient
noise and lets you enjoy the music more.
• Tangle-resistant cable is also easy to store.
• Gold-plated stereo mini jack
Acoustic optimizer
Acoustic optimizer
Acoustic optimizer

*Design and specifications are subject to change without notice.
55440807 B
Accessories AH-C751
•Hard shell carrying case
• 31" / 0.8m extension cable
• 3 sizes of ear pads included provide custom fit
Accessories AH-C351
•Carrying pouch
• 31" / 0.8m extension cable
• 3 sizes of ear pads included provide custom fit
Accessories AH-C551
• Hard shell carrying case
• 31" / 0.8m extension cable
• 3 sizes of ear pads included provide custom fit
Specifications
AH-C551
Type Dynamic type
Drive units ø 11 mm Neodymium magnet
Input impedance 16 Ω/ohms
Sensitivity 104 dB/mW
Maximum input 250 mW
Frequency response 15 - 24,000 Hz
Weight 5.4 g (not including cable)
Cable length
0.5m OFC Cable ø3.5mm Stereo mini-plug
(1.3m total cable length with 0.8m extension cable)
Plug ø3.5 mm gold-plated
stereo mini plug
Limited Warranty 1 year
Specifications
AH-C351
Type Dynamic type
Drive units ø 9 mm Neodymium magnet
Input impedance 17 Ω/ohms
Sensitivity 110 dB/mW
Maximum input 20 mW
Frequency response 20 - 21,000 Hz
Weight 3.0 g (not including cable)
Cable length
0.5m OFC Cable ø3.5mm Stereo mini-plug
(1.3m total cable length with 0.8m extension cable)
Plug ø3.5 mm gold-plated
stereo mini plug
Limited Warranty 1 year
Specifications
AH-C751
Type Dynamic type
Drive units ø 11 mm Neodymium magnet
Input impedance 16 Ω/ohms
Sensitivity 104 dB/mW
Maximum input 250 mW
Frequency response 12 - 24,000 Hz
Weight 6.6 g (not including cable)
Cable length
0.5m OFC Cable ø3.5mm Stereo mini-plug
(1.3m total cable length with 0.8m extension cable)
Plug ø3.5 mm gold-plated
stereo mini plug
Limited Warranty 1 year
Denon Brand Company
D&M Building, 2-1 Nisshin-cho, Kawasaki-ku, Kawasaki-shi,
Kanagawa, 210-8569, apan
www.denon.com
Denon Electronics (USA), LLC
100 Corporate Drive
Mahwah, N 07430
www.usa.denon.com