The Cambridge Audio AX-A25 integrated amplifier delivers 25 watts per channel and draws on decades of British expertise in the audio field. Designed for use with compact speakers and smaller listening spaces, it aims to provide faithful reproduction of recordings while maintaining a simple and efficient design.
A sonic architecture shaped by fifty years of innovation
The Cambridge Audio AX-A25 embodies the “Great British Sound” philosophy cultivated since 1968, when the brand revolutionized amplification with the P40, the world’s first amplifier to feature a toroidal transformer. This technological lineage continues in the AX-A25, where every component is meticulously selected to preserve the purity of the musical signal.
The internal design favors short, direct signal paths, thus minimizing the risk of sound coloration. The die-cast heat sink replaces cost-saving pressed steel solutions, ensuring optimal thermal management even during extended listening sessions. The carefully damped power supply eliminates transformer hum, a recurring issue in entry-level models.
Amplification delivers 25 watts per channel into 8 ohms, with a remarkable ability to provide 80% of this rated power while maintaining total harmonic distortion below 0.015% at 1 kHz. The frequency response ranges from 10 Hz to 30 kHz (-3 dB), ensuring faithful reproduction of extreme frequencies. The signal-to-noise ratio above 82 dB guarantees exemplary background silence, allowing you to appreciate the micro-details in your recordings.
Sleek design and thoughtful ergonomics
The AX-A25’s aesthetics are inspired by the higher-end CX and Edge ranges, adopting Cambridge Audio’s signature “Lunar Grey” finish. This anthracite grey shade, combined with the black chassis, gives it a timeless elegance that transcends fleeting trends. The brushed aluminum front panel, just 83 mm high, allows the amplifier to fit into even the most constrained spaces.
The central volume knob dominates the front panel, flanked by bass and treble tone controls offering ±5.5 dB adjustment at 20 Hz and 20 kHz. These adjustments let you tailor the sound to the room’s acoustics or your personal preferences. The balance control completes this ergonomic set.
The rear panel connectivity shows particular attention to the user: the input numbers (A1-A4) are printed upside down, making them easier to read when connecting sources. The screw terminals accept bare wire and banana plugs, ensuring reliable connections with your speakers.
Versatile connectivity for the modern audio ecosystem
The AX-A25 features four stereo RCA inputs on the rear, accommodating a CD player, turntable (via external phono preamp), network player, or game console. A fifth 3.5 mm mini-jack auxiliary input on the front panel allows for temporary connection of portable devices. This input shares selection with input A4, offering welcome flexibility.
The recording output (Rec Out) allows connection to a recorder or external signal processor. This feature, often absent from today’s entry-level amplifiers, will delight enthusiasts wishing to archive their mixes or integrate a graphic equalizer.
The powered USB port (5V/500mA) is a welcome modern touch. Rather than integrating a Bluetooth module that could compromise signal purity, Cambridge Audio lets the user add a wireless receiver of their choice, powered directly by the amplifier.
Comparison with the AX-A35 model: understanding the differences
The AX-A25 is positioned as the entry-level model in the AX range, with its big brother AX-A35 offering additional features for 100 euros more. The AX-A35 delivers 35 watts per channel, includes a phono preamp for moving magnet (MM) turntables, features a matrix display, a 6.35 mm headphone output, and comes with a remote control.
Paradoxically, some comparative tests highlight the superior sound quality of the AX-A25, whose purely analog architecture and absence of digital circuits better preserve signal transparency. This observation is a reminder that simplicity often goes hand in hand with musicality in high-fidelity audio.
An essential link for discovering true high-fidelity
The Cambridge Audio AX-A25 is a coherent proposition for enthusiasts wishing to discover high-fidelity sound without excessive compromise. Its careful construction, remarkable acoustic performance, and affordable price make it a safe bet on the market. Specialized reviews unanimously praise its ability to reveal the subtleties of recordings, its engaging dynamics, and its tonal neutrality.
Paired with quality compact speakers and a suitable digital or analog source, the AX-A25 forms the heart of a stereo system capable of providing years of musical enjoyment. Its standby power consumption below 0.5 W and automatic standby function (which can be disabled) reflect a welcome environmental awareness.
Bass and treble control: boost / cut ± 5.5 dB at 20 Hz and 20 kHz
Balance control
Source selector
Connectivity
4 stereo RCA analog inputs
1 front-panel 3.5 mm mini-jack auxiliary input (shared with RCA input 4)
1 RCA recording output
1 powered USB port: 5 V / 500 mA for charging a smartphone or portable player
Screw-type speaker terminals compatible with banana plugs
Physical Characteristics
Dimensions (H × W × D): 83 × 430 × 340 mm
Weight: 5.1 kg
Mains power supply: 220-230 V AC, 50 / 60 Hz
Power consumption: 180 W maximum, < 0.5 W in standby
Metal front panel with a sleek, elegant finish
Frequently Asked Questions
Can the AX-A25 drive floorstanding speakers?
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With its 25 watts per channel, the AX-A25 is perfectly suited for compact speakers and small, high-sensitivity floorstanders (88 dB and above). For power-hungry floorstanders or large rooms, the AX-A35 or a higher model will be more appropriate. Nevertheless, the quality of the amplification allows you to fully exploit the potential of well-designed speakers in spaces up to 20–25 m².
Why isn’t a remote control included?
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Cambridge Audio chose to prioritize the quality of internal components rather than add accessories to this entry-level model. This minimalist approach helps keep the price accessible while preserving acoustic performance. Users who value the convenience of a remote control can opt for the AX-A35.
How do I connect a turntable to the AX-A25?
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Since the AX-A25 does not have a built-in phono preamp, you have three options: use a turntable with an integrated phono preamp, purchase an external phono preamp, or choose the AX-A35, which includes this function. A quality external phono preamp can even offer better performance than many built-in circuits.
Can the automatic standby mode be disabled?
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Yes, holding down the power button for 5–6 seconds toggles the automatic standby mode on or off. The LED blinks 5 times to indicate deactivation, 10 times for activation. This feature prevents unwanted standby during low-volume listening.
Do the tone controls degrade the sound?
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The AX-A25’s tone circuits are designed for minimal intervention in the signal. In the center position, they are virtually transparent. Their presence allows for subtle tonal balance adjustments according to room acoustics or speaker characteristics, without compromising the system’s musicality.
User reviews
Josian
Replacing my Sony amp that broke down, which I used for my bedroom. I still compared it to my Denon PMA 800 amp in the living room. Advantages: very powerful sound for 25 watts, amp is well-made and elegant. Disadvantages: Audible leakage on the RCA inputs (when plugging the RCA jacks into input A1 and selecting input A2, you can hear the sound). The balance, the speakers are poorly calibrated. At low volume I have to turn the balance knob a quarter turn to the right since the left speaker plays louder. Conclusion: It's a shame, this little amp has a pretty good sound, but these 2 flaws shouldn't exist especially for a brand like this one even if it's the entry-level price.
Comment from December 16, 2021 — Experience from December 05, 2021
Automatically translated — Show original (French)
En remplacement de mon ampli Sony qui est tombé en panne que j'utilisais pour ma chambre. Je l'ai quand même comparé à mon ampli Denon PMA 800 dans le salon.
Les avantages : son très puissant pour les 25 watts, ampli plutôt bien fait et élégant.
Les inconvénients : Fuite audible sur les entrées RCA (en branchant les fiches RCA sur entrée A1 et en sélectionnant l'entrée A2 on entant le son). La balance, les enceintes sont mal calibrées. À faible volume je suis obligé de tourner d'un quart de tour le bouton de la balance vers la droite puisque l'enceinte du gauche joue plus fort.
Conclusion : C'est dommage, ce petit ampli à plutôt un bon son, mais ces 2 défauts ne devraient pas exister surtout pour une marque comme celle-là même si c'est le premier prix.
Eco-contribution of €0.85 included in the sale price.
GTIN / EAN: 5055300417985
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