The Adastra DM Series is a compact 100V line mixer-amplifier with a built-in digital amplifier, available in 25W, 40W, and 60W output variants — offering an all-in-one solution for small sound installations where simplicity and a small footprint matter.

An onboard media player handles USB audio playback and FM radio tuning, while Bluetooth connectivity allows a smartphone or tablet to be paired wirelessly for audio streaming. All three sources are managed from the front panel alongside dedicated controls for mic, aux, bass, and treble — keeping operation straightforward for day-to-day users.

Speaker output is switchable between 100V line and 4–16 Ohm low-impedance loads via spring terminals on the rear panel, making it compatible with both 100V line speaker systems and standard speakers. A stereo RCA line input is summed to mono, and a line output is provided for connecting additional amplification if needed.

• Built-in USB Player and FM Tuner: Play audio from a USB drive (FAT32, up to 128 GB) or tune to FM radio stations without any external source equipment.
• Bluetooth Wireless Streaming: Pair a smartphone or tablet to stream audio wirelessly — ideal for venues where flexible source switching is needed.
• 100V or 4–16 Ohm Output: Supports both 100V line speaker systems and standard low-impedance speakers, covering a wide range of installation types.
• Compact Housing: A small physical footprint makes the DM Series easy to install discreetly on a shelf, in a cabinet, or in a compact rack enclosure.
• Front Panel Controls: Separate volume controls for mic, aux, and the media player section, plus bass and treble EQ, keep the system easy to operate without technical knowledge.
• Line Output: Dual RCA line output allows the signal to be passed on to additional amplifiers if the installation needs to be expanded.

Specifications

• Brand: Adastra
• Model: DM25 / DM40 / DM60
• Output Power (RMS): 25 W / 40 W / 60 W (variant dependent)
• Speaker Outputs: COM, 100V, 4–16 Ohms (spring terminals)
• Line Output: 2 × RCA
• Mic Input: 6.3 mm jack (unbalanced)
• Line Input: 2 × RCA (summed to mono)
• Antenna Connection: Spring terminal
• Controls: Mic, Aux, MP3, Bass, Treble
• Audio Sources: USB player, FM tuner, Bluetooth receiver
• USB: USB 2.0 (FAT32, 128 GB max.) — not for device charging
• Bluetooth Version: 2.1
• Mains Power Supply: 230 Vac, 50 Hz (IEC)
• Fuse: T1AL 230V
• Dimensions (W × H × D): 205.0 × 67.0 × 280.0 mm
• Weight: 1.34 kg (25W variant)

What You Get

• 1 x Amplifier
• 1 x Power Lead