At some point in every audiophile’s journey, the question arrives: should I run a single integrated amplifier, or should I split the system into a separate preamplifier and power amplifier? It’s a question with a genuine answer — but the answer depends on where you are in your journey, not on an abstract hierarchy of better and worse.
What We’re Actually Talking About
An integrated amplifier combines a preamplifier stage and a power amplifier stage in a single chassis. It takes line-level inputs (and often a phono input for turntables), provides volume control and source selection, and amplifies the signal to speaker-driving levels — all in one box.
Separates split these functions. A standalone preamplifier handles source selection, volume control, and sometimes phono amplification. Its output feeds into one or more standalone power amplifiers, which handle only the job of driving speakers.
Both approaches are entirely legitimate. Both can reach reference-level performance. The question is which makes more sense for your situation.
The Case for Integrated Amplifiers
Simplicity
One power cord. One chassis. One set of interconnects between the preamp and power amp sections (internal, not yours to worry about). Fewer boxes means less clutter, less cable management, and a smaller footprint on your equipment rack.
Value
When a manufacturer builds one chassis instead of two, they spend their money differently. The case, the transformer, the power supply, the display, the remote control — all of these are purchased once. A $3,000 integrated amplifier can offer genuinely better performance than a $1,500 preamp and a $1,500 power amplifier, because the money goes into the audio circuits rather than duplicated housings.
The Interconnect Problem
One source of subtle degradation in any audio system is the interconnect between preamplifier and power amplifier. Even good cables add capacitance, resistance, and potential for noise pickup. An integrated amplifier eliminates this link entirely — the two stages share a ground plane and communicate on the same PCB or via very short internal wiring.
They Can Be Exceptional
Some of the most celebrated amplifiers in high-end audio history are integrated units. The Luxman L-590AXII, the Accuphase E-800, the Pass Labs INT-60 — these are not entry-level compromises. They are world-class amplifiers that happen to combine two stages in one box.
The Case for Separates
Upgradeability
Separates let you upgrade one component at a time. If you want a better phono stage, add one without changing your amplification. If you need more power for new speakers, swap out the power amp. If you find a phenomenal deal on a preamp, buy it without abandoning your existing power stage.
This incremental upgrade path is genuinely useful — and it’s one reason many audiophiles prefer separates once they’ve settled on a direction.
Multiple Power Amplifiers
Biamplification — running separate amplifiers to the bass and treble sections of a speaker — requires separates. So does vertical biamplification, where a dedicated mono amplifier drives each speaker. These configurations are only possible with a separate preamplifier and at least two power amplifiers.
Isolation from Noise
In an integrated amplifier, the power supply for both stages shares one chassis. In a well-designed integrated, this is not a problem. But in separates, each component has its own transformer, its own power supply, and its own chassis — which provides natural isolation between stages. This can be advantageous in difficult electrical environments or with components that would otherwise interfere with each other.
Matching Power to Speakers
Power amplifiers are available across a massive range of output powers — from 5-watt single-ended triode designs to 500-watt solid-state monoblocks. Separates let you precisely match power output to speaker sensitivity. Many integrated amplifiers max out at 100–150 watts; if you have inefficient speakers in a large room, separates may be the only way to get what you need.
When to Choose Integrated
Choose an integrated amplifier when:
- You’re building your first serious system and want simplicity
- Your speaker impedance and sensitivity are within normal ranges (most are)
- Your budget is under $5,000 and you want maximum value
- You value a clean-looking, simple system
- You’re not planning to biamplify
When to Choose Separates
Choose separates when:
- You own difficult-to-drive speakers (low impedance, low sensitivity)
- You want to biamplify or run mono power amplifiers
- You’ve clearly identified a preamp or power amp that fits your needs perfectly
- You have a specific phono stage, DAC, or other component you want to integrate
- Your budget allows for meaningful investment in both halves
The Honest Answer
Most audiophiles, for most of their listening lives, are better served by a well-chosen integrated amplifier than by a separates setup. The value proposition is simply better, the added complexity offers diminishing returns below a certain investment level, and the interconnect elimination is a genuine advantage.
When you’ve reached a point where you know exactly what you want from each stage of amplification, and when your budget comfortably supports two quality components rather than stretching to fill one, separates become worth the conversation. Until then, find the best integrated your budget allows and spend the saved money on speakers and source components, where the gains are far more audible.