What follows is a practical guide to building a first serious hi-fi system, specifically when buying used. The used market changes the maths substantially. Components that cost twelve hundred pounds new often appear on the pre-owned market for four hundred. The quality available at a given budget is dramatically higher than new equivalents at the same price, and the gap widens as the budget increases. If you are building a first system and you are not considering used, you are paying a significant premium for a sealed box.
What a hi-fi system actually consists of
A basic hi-fi system has three parts: a source, an amplifier and a pair of speakers. The source plays the music, the amplifier makes the signal large enough to drive the speakers, and the speakers turn that signal into sound in the room.
The source can be a turntable, a CD player, a streaming device or a combination of these. The amplifier is usually an integrated amplifier, which combines the preamplifier (volume control and input selection) and the power amplifier (the stage that actually drives the speakers) in a single box. The speakers are, in most systems, passive meaning they take a signal from the amplifier rather than having their own built in amplification.
You also need cables. Speaker cable connects the amplifier to the speakers. Interconnects (also called phono cables or RCA cables) connect the source to the amplifier. If you have a turntable, you need either an amplifier with a built in phono stage or a separate phono stage box. These are the basics. Everything else is an upgrade.
What order to buy in
This question generates more disagreement in hi-fi circles than almost any other, and most of it is less useful than it pretends to be. The practical answer is this: start with the amplifier and speakers, chosen together, and sort the source afterwards.
The reason is straightforward. The amplifier and speakers have to work as a matched pair. An amplifier that struggles to drive the speakers you have chosen will sound strained and compressed at normal listening volumes. A capable amplifier into efficiently designed speakers will sound open and comfortable even at modest power output. Getting this pairing right is the single most important decision in building a system, and it is much easier to do if you are thinking about both components at once rather than buying one and then trying to find the other to suit.
The source comes after because the improvement a better source brings depends entirely on the quality of the amplifier and speakers it feeds. A good turntable into a poor amplifier sounds no better than a cheap turntable. The same good turntable into a capable amplifier and well-chosen speakers reveals its quality immediately. Sort the foundation first and the source investment pays back properly.
How much to spend on each component
Spending roughly evenly across the three main components is a reasonable starting point. A system where one component dramatically outspends the others tends to produce diminishing returns, because the weakest link determines what you actually hear.
At a total budget of around six or seven hundred pounds for a used system would go along way. At a thousand pounds, the proportions shift slightly toward speakers because the quality ceiling for speakers at a given budget rises sharply with spending, while the quality ceiling for amplifiers at three hundred pounds used is already very high relative to a new amplifier at the same price.
None of these numbers are rigid rules. If a particular opportunity appears, a well maintained pair of speakers worth significantly more than your speaker budget, sometimes the right move is to buy them and adjust everything else accordingly. The used market rewards flexibility.
Choosing the amplifier
For a first system on a sensible budget, an integrated amplifier between thirty and eighty watts per channel will serve the vast majority of speakers and listening rooms. Below thirty watts you start to limit your speaker choices, particularly in larger rooms. Above eighty watts, at typical used prices, you are into serious amplifier territory that may exceed what the rest of the system can resolve.
Brands that consistently produce capable integrated amplifiers, and whose used examples are well worth seeking, include Naim, Rega, Arcam, Cambridge Audio, Musical Fidelity, Creek and Exposure. Each has a slightly different character. Naim is famous for rhythmic drive and pace. Rega tends toward clarity and speed. Arcam is typically warmer and smoother in its character. All of them build amplifiers that last decades if maintained, and all of them appear regularly on the pre-owned market at very accessible prices.
If your source includes a turntable, check whether the amplifier you are considering has a built in phono stage. Many do. Those that do not require either a separate phono stage or a turntable with a built in one.
Choosing the speakers
The most important practical constraint when choosing speakers is whether they match the amplifier you have or are planning to buy. The two numbers to check are sensitivity and impedance. Sensitivity tells you how loud the speaker plays for a given amount of amplifier power. Impedance tells you how demanding a load the speaker presents to the amplifier. A mismatched pairing produces a system that sounds constrained or strained in use, regardless of the individual quality of each component.
For a typical integrated amplifier of fifty watts or more, speakers rated between 85 and 92dB sensitivity and at a nominal 8 ohm impedance are the most straightforward pairing. This covers the majority of British standmounters from manufacturers such as Harbeth, ProAc, Spendor, Neat and B&W, all of which are well represented on the used market and all of which were built to last.
Whether to buy standmounters or floorstanders depends primarily on room size and bass requirements. In a typical living room, good standmounters on proper stands often perform better than floorstanders at the same price, because smaller speakers are more predictable in domestic rooms where bass reinforcement from walls can cause problems. Floorstanders come into their own in larger rooms where their bass extension can be properly developed.
If you buy standmounters, factor in the cost of stands. A good pair of speaker stands makes an audible difference because it decouples the speaker from the floor and brings the tweeter to the correct listening height. Used speaker stands from manufacturers like Atacama, Target and Sound Organisation are widely available at modest prices.
Choosing the source
This is where personal preference matters most, because the choice of source is also a choice about how you listen to music and what your existing collection looks like.
If you already have a collection of records, a turntable is the obvious choice. A used Rega Planar 3 or equivalent, in good condition, is an excellent starting point and can be improved incrementally over time. A used Linn LP12 at entry level specification offers a different musical character that many listeners find more involving, though it requires more attention to setup.
If streaming is your primary listening medium, a used network streamer with a built-in DAC, from Naim, Cambridge Audio, or Arcam, turns a subscription service into a serious source. Alternatively, a good external DAC connected to a phone or laptop can produce excellent results at modest cost, as explained in our DAC guide.
A used CD player is often the overlooked option, particularly if you have access to a large collection of discs or enjoy buying physical music. A used Naim CD5i, Rega Apollo-R or Cambridge Audio 851C costs a fraction of its original price and outperforms any new player at the same money. For anyone who buys music and values owning it properly rather than renting access to it, a good CD player is still the most satisfying choice.
There is also nothing wrong with having two sources. A turntable and a CD player, or a turntable and a streamer, connected to an amplifier with multiple inputs, gives you access to different music in different ways. Most amplifiers have at least three or four inputs, which makes this straightforward.
Example systems at three budgets
Around five hundred pounds: A Cambridge Audio Azur 640A or 740A amplifier with a built-in phono stage, paired with a used pair of B&W 686 or ProAc Tablette standmounters, and a used Rega Planar 2 or Planar 3 as the source. This combination is coherent, capable and easy to improve on incrementally as budget allows.
Around a thousand pounds: A Naim Nait 5i or Rega Brio-R amplifier, paired with used Neat Motive or Harbeth P3ESR speakers, and a used Rega Apollo or Naim CD5i as the source. At this level the system begins to reveal what is actually in recordings rather than flattering everything equally.
Around two thousand pounds: A used Naim Supernait or Rega Elicit-R amplifier, with used Harbeth P3ESR or ProAc Response 1SC speakers on proper stands, and a used Linn LP12 at Cirkus specification or a Naim CDX2 CD player as the source. At this level the system is genuinely serious and will outperform most new equipment at two or three times the price.
These are suggestions, not prescriptions. The right system is the one that makes you want to sit down and listen to it rather than the one that scores highest on a specification sheet.
What to upgrade first
Once a system is in place and working well, the first upgrade worth considering is the source. If you started with a modest turntable or CD player, moving up the quality ladder here feeds every other component in the chain. A better turntable reveals detail that a good amplifier and speakers were always capable of reproducing but never had presented to them. A better CD player or streamer does the same.
The second upgrade worth considering is usually the speakers. Speakers are the component with the most variation in character from one model to the next, and changing them changes the system more dramatically than changing any other single component at the same budget.
Amplifier upgrades tend to be the last and most expensive step, but they also tend to produce the most consistent and reliable improvements across all sources and speakers. A better amplifier makes everything it is connected to sound more like itself.
If you have questions about what would work in your system or your room, get in touch. We are happy to talk through the options before you commit to anything.
Browse our full range of used hi-fi at 2ndhandhifi.co.uk
For the dedicated enthusiast
A few things about system building that rarely come up in practical guides aimed at beginners, but which matter when you start thinking carefully about why certain combinations work and others do not.
Amplifier current delivery and speaker impedance. The rated impedance of a speaker is a nominal figure. In practice, impedance varies with frequency and can dip well below the rated value in the bass region, sometimes to half the stated impedance or less. An amplifier rated at a given power output into 8 ohms delivers more power into 4 ohms, but it also has to work harder. Amplifiers with high current delivery, typically characterised by a large power supply transformer and generous reservoir capacitance, handle these impedance swings comfortably. Those without can sound strained or dynamically compressed at loud volumes into difficult loads, even if the rated power output looks adequate. Naim amplifiers, historically, have been designed around current delivery rather than raw voltage swing, which is why they partner particularly well with speakers that present a benign impedance load but are not necessarily the most sensitive on paper.
Source first versus amplifier first: the actual argument. Linn's Ivor Tiefenbrun made the source first argument famous in the 1970s, and it remains both the most influential and the most misunderstood idea in domestic hi-fi. His point was not that the source is more important than the amplifier or the speakers in the sense that you should spend more on it. His point was that whatever information the source fails to extract from the recording is lost permanently and cannot be recovered downstream. A flawed retrieval at source compounds through every stage that follows. This is true, and it is why a capable source matters. The practical qualification is that a source, however good, cannot be heard through a system that lacks the resolution to reveal what it provides. The source first argument is not a guide to spending priorities so much as an argument for paying attention to the quality of retrieval before investing in amplification or transduction. In practice, building a coherent system where all three components are well matched to each other produces better results than skewing spend heavily toward any one of them.
Why coherent systems outperform mismatched upgrades. The most common mistake in hi-fi system building is buying components from different quality tiers without considering how they interact. A genuinely high end cartridge on a poorly set up tonearm produces worse results than a mid-range cartridge correctly aligned. A reference-quality amplifier feeding speakers whose impedance it cannot handle comfortably sounds worse than a more modest amplifier into speakers it was designed to drive. The British hi-fi industry in particular has historically understood this, which is why integrated amplifier and speaker recommendations tend to come from dealers who have listened to the combination rather than from specification comparisons. When buying used, the equivalent discipline is to resist the temptation to buy a single component of significantly higher quality than everything else in the system. The quality ceiling of a system is set by its weakest component, not its strongest.
The phono stage question. If your system includes a turntable, the phono stage is worth taking seriously from the beginning rather than treating as an afterthought. An amplifier with a built-in phono stage is convenient and the built in stage on a quality amplifier, a Rega Brio or a Naim Nait, is genuinely good. Separating the phono stage into a dedicated external box, even a modest one, often produces a cleaner result because the cartridge signal is amplified before it enters the main amplifier chassis with its higher level signals and denser switching noise. The Rega Fono MM, the Cambridge Audio Solo, and the Musical Fidelity V-LPS are all sensible starting points on the used market. At higher budgets, the Naim Stageline and the Rega Aria represent more serious investment. The return on a phono stage upgrade is typically higher per pound than almost any other single change to a vinyl based system.