# Active vs passive speakers: which kind of system do you want? Amplifier inside or outside? Two systems, two costs, two upgrade paths. Source: https://truescaleaudio.com/en/guides/active-vs-passive-speakers Nearly every speaker decision eventually runs into this fork: buy a passive pair and a separate amplifier, or buy an active pair with the amplification already inside. It isn't a question of which sounds better — both approaches reach the highest level — but they lead to genuinely different systems, different costs and different upgrade paths. Across the TrueScale catalog, roughly nine in ten speakers are passive — so passive is still the default of the hi-fi world. But the active side is where most of the recent engineering energy has gone. Here's what actually separates them. ## The actual difference: where the amplifier sits A **passive** speaker contains no amplification. One amplified signal arrives at its terminals, and a passive crossover inside — capacitors, inductors, resistors — splits it by frequency and routes each band to the right driver. One stereo amplifier drives both speakers. An **active** (or *powered*) speaker splits the signal by frequency **first**, at line level, and then gives each driver its own dedicated amplifier channel. A three-way active speaker has three amplifiers inside it, per cabinet. It plugs into mains power and takes a line-level or digital input — no external amplifier at all. That ordering — filter then amplify, instead of amplify then filter — is the whole thing. Everything below follows from it. There's more on the crossover itself in [The box and the brain](/guides/cabinet-ports-and-crossovers). ## Careful: 'active' is not the same as 'powered speaker with Bluetooth' The word gets used loosely, and it's worth separating three things a shop might all call 'active': - **Truly active:** the crossover is before the amplifiers and every driver has its own amp channel. This is the engineering case, and it's what studio monitors do. - **Powered but passively crossed:** one internal amplifier feeds a conventional passive crossover. Convenient and often good, but it doesn't get the real active benefits. - **A primary-plus-secondary pair:** one cabinet holds the electronics and feeds the other by cable, so only one speaker is really powered. Common at entry prices — check whether the second cabinet is passive. TrueScale marks a speaker as active whenever the amplification is built in, so check the driver and amplifier details on the page to see which of the three you're looking at. ## What active does better - **Each driver gets exactly the power it needs.** The designer chooses the amp for the tweeter and the amp for the woofer separately — no compromise amplifier trying to do both jobs. - **No power wasted in the crossover.** A passive crossover filters an already-amplified signal, burning some of it as heat in resistors and coils. Active filtering happens before the power stage. - **Far more precise filtering, and DSP.** Active crossovers can be steeper and more exact, and a DSP can also correct driver behaviour, time-align drivers and apply room correction — things a passive network simply cannot do. - **The system is finished and matched.** No amplifier shopping, no impedance worries, no speaker cable. What the designer intended is what you hear. This is why active designs dominate professional studios. [ATC](/brand/atc) offers active versions across its range, and DSP-driven designs like those from [Kii Audio](/brand/kii-audio) and [Dutch & Dutch](/brand/dutch-dutch) use the electronics to shape dispersion in ways no passive speaker can — narrowing the pattern to cut wall reflections. ## What passive does better - **You choose and change the amplifier.** The amp is a large part of a system's character; with passive speakers you can voice the system to taste, and upgrade the amp later without replacing the speakers. - **Nothing to go obsolete or fail inside the cabinet.** No mains supply, no DSP board, no streaming module that stops being supported. A good passive speaker can outlive several amplifiers — and be repaired decades later. - **Only one power cable, at the rack.** Active speakers each need mains at the speaker position, which often means running power to both sides of the room. - **Far more choice, and a real second-hand market.** Most speakers ever made are passive, so at any budget the passive options — new and used — vastly outnumber the active ones. ## The money question Compare total system cost, not sticker price. An active pair includes amplification, and often a DAC, streaming and a phono stage too — so a €1,500 active pair may be competing with €1,500 of passive speakers *plus* an amplifier and a streamer. Judged that way, active is usually the better value at lower budgets, and the gap narrows as you go up. The counterweight is resale and longevity: passive gear holds value and stays serviceable longer, because there's less inside to age. ## Hybrids: powered bass, passive top A few flagships split the difference. The bass drivers get built-in amplification and DSP room correction, while the midrange and treble stay passive and are driven by your own amplifier. You get corrected, high-output bass — the hardest part for any room — while keeping the amplifier choice that passive owners care about. [MartinLogan](/brand/martinlogan) uses this on its Masterpiece electrostatics (the panel is passive, the woofers powered with Anthem room correction) and [Paradigm](/brand/paradigm) on its Founder 120H and Persona 9H. The catch: you still need to buy a good stereo amplifier, *and* find mains power at the speakers. ## Which should you buy? Lean **active** if you want one clean decision and a finished system, if your budget is modest and you'd rather it all go into the speakers, if space is tight or the room is difficult (DSP and cardioid designs help a lot), or if you value having streaming and TV inputs built in — as in the all-in-one systems from [Cambridge Audio](/brand/cambridge-audio), [Technics](/brand/technics) and [Bang & Olufsen](/brand/bang-olufsen). Lean **passive** if you already own an amplifier you like, if you enjoy choosing and swapping components, if you want the widest possible choice or a used bargain, or if you're buying something to keep for twenty years. If you go passive, the amplifier match is the thing to get right — see [Sensitivity and impedance](/guides/speaker-sensitivity-and-impedance). One thing this choice does *not* decide is how the speaker sounds or how big it is. An active and a passive speaker of the same size and driver layout can be equally good; the difference is the shape of the system around them. You can [filter the catalog by powered or passive in HiFi Search](/hifi-search), and [compare any two at true scale](/compare) whichever way you go.