87%
Amphion BaseTwo25
Elevate your monitors
BaseTwo25 is a state-of-the-art monitoring solution elevating a two-way studio monitor into a full range, three-way system. The system is driven by BaseAmp1200, which houses Amphion’s discrete filtering module with a 4-step crossover selection, bypass and variable-level attenuator.
Unique highlights
Stereo to the lowest octave
Amphion’s introduced their first Base Extension system in 2015. The concept of keeping stereo information all the way down has become widely adopted since.
Seamless integration
Designed to work seamlessly with all monitor sizes. System can even be paired with a smaller model for an ultra-fast, easy to adjust small room full-range system.
Elevate your monitors
As the bass frequencies are transferred to the Base system, the midrange clarity and power-handling of the paired monitors are greatly enhanced.
Industry-defining clarity
Force-cancelling driver configuration and highest quality components lead into industry-defining clarity, control, and low frequency detail.
Simple setup
Always placed under the monitors. Fixed placement and physical proximity between the monitor and bass extender ensure perfect integration.
2-way, 3-way or Amphion way?
Simplicity of a 2-way monitor or the power handling of a 3-way design? The system can easily switch between both with a push of a button or foot switch.
Dealers selling Amphion near you
The BaseTwo25 extends Amphion monitors to a remarkably deep extension down to 10Hz, delivering controlled bass and phase-accurate integration with high SPL headroom. Best of High End highlights its robust 10" woofers, passive radiators and sophisticated crossover/filtering, making this handmade Finnish turnkey system a heavyweight solution for serious studios and audiophiles.
Pros
- Extends low-frequency response to around 10Hz for true full-range monitoring and time/phase-accurate integration with mains monitors.
- Robust 10" aluminium woofers with passive radiators deliver high SPL capability and tight, controlled bass for demanding material.
- Sophisticated filter/crossover module and selectable crossover points support smooth integration and flexible system tuning.
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Cons
- Premium turnkey design comes at a high price point (~$12,500 in the announcement), which may be prohibitive for some buyers.
- System examples in the announcement rely on powerful outboard monoblock amplification and a dedicated filter module, adding complexity and cost to installations.
Sound Quality
90/100
Bass
91/100
Specs indicate two 10" aluminium woofers plus two 10" passive radiators and a quoted 20–100 Hz ±3 dB response with 127 dB max SPL and a 700 W per-channel amp option—these point to deep, controlled extension and high output for the cabinet size. No third‑party listening or measurement reviews were provided, so this score is conservative but generous based on the hardware and published performance figures.
Dynamics
88/100
The BaseAmp1200 is specified at 700 W (4 Ω) per channel with low THD+N figures and a 127 dB A‑weighted dynamic range, implying excellent headroom, transient control and low compression at high levels. Without listening reports, this is an equipment‑spec driven assessment; measured or reviewer reports could push this higher.
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Integration
82/100
The system offers selectable active 4th‑order crossover points (40/60/80/100 Hz) and Neutrik Speakon connections, which are strong feature signals for fine integration with mains. Features ≠ Integration; add outcome evidence or lower Integration. In absence of reviewer outcome language (e.g., 'seamless', 'disappears', 'no boom'), this score reflects useful tools but lacks confirmed real‑room blending results.
Build Quality
90/100
Drivers are aluminium, the product is handmade in Finland, and the cabinets are heavy (2×32 kg), all of which indicate premium construction and attention to materials. No durability or long‑term reviewer comments were provided; score reflects strong manufacturing cues from the specifications.
Features Connectivity
86/100
Good feature set: selectable active crossover, Speakon terminated 3.5 m connection cable, and an available BaseAmp1200 with modern standby, low noise and extensive dynamic range. The design is aimed at professional/fixed installations and high‑end systems; usability in consumer setups may require additional components (external amp), which is factored into the score.
Value for Money
78/100
Price was not provided. Given premium build, professional connectors, and strong amp specs, the product likely sits at a high price point; without pricing or reviewer value statements (e.g., 'best in class', 'no‑brainer') the score is cautious—reflecting high capability but unknown cost competitiveness.
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