Design and features:This portable, on-ear noise-canceling model works with or without the noise-canceling feature being turned on; you can use the noise-canceling feature without listening to music, but the audio cable can't be detached. The headphones have medium-high to high sensitivity when the noise-cancellation feature is turned on, so they can provide satisfying volume levels even when used with lower-powered portable audio devices. When the noise cancellation feature is turned off they have medium-high sensitivity, with enough volume for use with most lower-powered portables. The Radio Silenz situates its noise-canceling circuitry, as well the battery and a volume control, in an inline remote control that features a shirt clip. This model has earcups that swivel and fold flat for travel and storage, and it comes with a mini-plug-to-airplane-jack adapter and a travel pouch.
Sound quality: We found the Radio Silenz headphones deliver good overall sound, with a warm to neutral character depending on the program material. However, the active noise reduction was largely ineffective. Regardless of whether or not the noise-canceling circuitry is engaged, the sound remains the same. Bass has good definition and decent impact, but low bass is lacking. Midrange is even but a bit constricted, and upper midrange/lower treble sounds a bit congested. Lower to mid treble has good detail, but upper treble sounds recessed and hazy. The overall sound is closed in, with good dynamics, but attacks are a bit damped. We found the noise canceling performed poorly; when engaged it seems to slightly amplify high-frequency noise and cut a bit of mid- and low-frequency noise. In fact, it's questionable whether or not this model provides better quality noise reduction with the noise canceling feature turned on or off. Also, in quieter environments or when the program material is at relatively moderate volume there is a noticeable hiss when the noise-canceling feature is activated.
Comfort: We found that these headphones provide decent comfort, though there is a sense of moderate pressure on the ears. Also, the earpads may not articulate enough to allow them to sit flat on some users' ears, and the vinyl earpads might feel hot and/or sticky after prolonged use.
