In 1991, Denon announced the standard DVI player, which enables one-hour playback of full motion video into a 12cm diameter CD and opened a multimedia studio in the head office.

In 1992, two decades after the company became the first in the world to have put digital recorders to practical use, "ALPHA Processing" was announced, an epoch-making technology. This technology achieves microscopic smoothness by incorporating a capability consisting of interpolating the 16-bit data of a CD to 20 bits, so as to approach the analog wave forms during recording. It was first incorporated in the D/A converter DA-S1, released in 1993. That same year, Denon's award-winning twin deck DJ CD player, the DN-2000F, becomes the industry standard for club DJ's.

In 1994, Denon’s Alpha Processor wins the European Audio Award for Innovation. In addition, the company introduces Mini Disc Cart Players and the first Professional Broadcast Mini Disc Cart Recorder, now the industry standard in radio stations worldwide.

Continuing its long history of world’s firsts in digital A/V technology, Denon introduces the AVP-8000 in 1995 as the first home theater system to support Dolby Digital decoding with Lucasfilm THX 5.1 post-processing, followed by the AVR-5600, the world's first A/V receiver with Dolby Digital and THX and the Dolby Digital AC-3/THX preamp/tuner/processor. Catering to the broadcast, DJ and professional industries, Denon also delivers the world’s first family of Mini Disc products. Maintaining its heritage as a leader in recordings, Denon releases the Mahler Symphony No. 4 in the UK at the Abbey Road studios. The Royal Philharmonic Orchestra conducted by Jun-ichi Hirokami also performs the piece at the Royal Festival Hall. A new studio dedicated to state-of-the-art digital recording is also established in Yoyogi, Japan, and DVD Video standards are constituted.

In 1996, Denon Active Media (DAM) is formed in Atlanta, GA to launch into the DVD-disc pressing business. To enhance the power of Denon, the world’s first Dolby Digital/THX 5.1 AVP-A1 A/V pre-amp/processor is created with matching 3- and 2-channel power amplifiers.

Denon introduces the DVD-2000 Digital Video Disc play in 1997 to continue its active role in the technological evolution of 5” optical discs. In addition, the world’s first commercial music DVD discs are released by Denon – Beethoven’s Symphony No. 3 “Eroica”, the Egmont Overture and Chopin’s Piano Concerto No. 1, which were all recorded in 5-channel surround sound.

In conjunction with the release of Star Wars – Episode 1 in 1999, Denon introduces the world’s first THX-EX (Extended) A/V component – the AVC-A10SE. This specialized encoding enhances “Surround Back” channel for both commercial cinema and home cinema equipment. Signals can now be truly available in 360 degree surround sound with panning in any direction.