Spectrum are going for a dramatic, heavy mood in their 2nd mini album comeback teaser photos.

So far, the group has released black and white, individual photos of members Jaehan, Donggyu, and Minjae, which you can check out below. As previously reported, this will mark Spectrum's first comeback as a 6-member group, after member Dongyoon's tragic passing in July of this year.�

Spectrum's 2nd mini album 'Timeless Moment' is set for release on November 4.�