Buying & collecting

Buying a reel-to-reel tape deck: what to check, and what it will cost to keep

Buying & collecting · Published 2026-10-21

A Studer B67, a professional machine of the late 1970s, with seven-inch reels mounted. Photo: Robert Taylor from Stirling, ON, Canada, Wikimedia Commons, CC BY 2.0.

Reel-to-reel decks are beautiful machines and demanding ones. A good one can play tapes better than almost anything; a tired one can damage them. Before looking at a deck, decide what you want it for, because that decides the track format, speed and reel size you need.

Decide what the deck is for

• Transferring family tapes: most home tapes from the 1960s onwards are quarter-track stereo at 3¾ or 7½ ips on seven-inch or smaller reels. A quarter-track deck with those speeds covers the majority.
• Playing modern or studio "master" copies: these are typically half-track (two-track) at 15 ips, often on ten-and-a-half-inch reels with NAB hubs. You need a half-track machine that takes large reels.
• Recording: you will need a deck with working record electronics, and tape that the deck can be calibrated for.

A half-track deck plays a quarter-track tape incorrectly (both directions at once), and vice versa a quarter-track head reads only part of a half-track recording. Some machines have interchangeable head blocks or an extra playback head; check exactly which head configuration a given unit has.

Reel sizes, hubs and consumer versus professional

Open reels come mainly in three sizes for quarter-inch tape: five, seven and ten-and-a-half inches. Home decks usually take reels up to seven inches; larger home and most professional machines also take ten-and-a-half-inch reels, which normally have a large central NAB hub and need a pair of NAB adapters to fit the deck's spindles. Small reels with a three-pronged centre hole are often called cine reels. If you have a stack of ten-inch tapes, a seven-inch deck cannot play them without rewinding onto smaller reels, which adds handling and risk.

Consumer machines were built to a price and a weight, often with many plastic parts and features such as auto-reverse. Professional machines are heavier, usually simpler to align, better documented and designed to be serviced, but they can be large, need a strong table, and may have balanced inputs and outputs that need the right cables. Semi-professional models sit between the two. None of these categories guarantees condition: a well-kept consumer deck is a better buy than a tired studio machine.

The heads

Heads are the most expensive part to replace, and on some models replacements are no longer made. Look at them closely with a torch:

• The face should be smooth and evenly shiny. A visible flat band with a step at its edges, or a groove where the tape runs, means wear.
• Look for chips and for brown oxide deposits. Deposits clean off; chips do not.
• Uneven wear across the width suggests the tape path was misaligned.

Moderate wear is normal and a worn head can sometimes be relapped by specialists; heavy wear reduces high frequencies and output, especially in playback.

Transport: pinch roller, brakes and tension

The transport moves the tape. A fault here is what damages tapes.

• Pinch roller: it should be slightly soft and matte, not glazed, cracked, sticky or out of round. A bad roller causes speed instability and can pull the tape off its path.
• Capstan: clean and smooth, without a groove.
• Brakes: stopping from fast wind should be firm and even, without loops forming or the tape snapping tight. Weak or uneven brakes spill or stretch tape.
• Tension: in play, the tape should pass the heads with steady contact. Listen for even sound and watch the tension arms if the deck has them.
• Winding: fast-forward and rewind a full reel. The wound pack should be smooth.
• Motors: listen for grinding, squeal or hesitation at start.

Electronics and meters

Play a known recording and check both channels for noise, crackle and balance. On decks with record electronics, record a little of a music source and compare source and tape monitor if the machine has a third head. Turn every switch and knob: scratchy level controls and speed or EQ switches are common and usually curable, but intermittent channels may hide failing components. VU meters should move smoothly and return to rest; lamps are often out and are a small job.

What should come with it

• At least one empty take-up reel of the right size, and NAB adapters if the deck takes large reels.
• Covers or dust lids if the model had them, and the original transport locks or packing for shipping.
• The owner's manual. The service manual is a bonus worth asking about.
• Remote controls or special cables if the model depends on them.

Running costs to expect

Even a healthy deck needs regular cleaning and demagnetising and, over time, new belts, pinch rollers and sometimes motor or brake work. Professional machines are often simpler to service and better documented; consumer machines are lighter, cheaper and more common. Before buying an unusual model, ask a local technician whether they work on it and whether parts are available. The repair guide describes typical jobs.

Questions to ask the seller

1. When was it last used and last serviced, and by whom?
2. Head configuration: quarter-track, half-track, or both?
3. Which speeds and reel sizes does it handle?
4. Has it been converted for a different mains voltage, or is it set for yours?
5. Can you watch a full play, a fast wind and a stop with a test tape?

Once you have one, read how to transfer tapes properly, starting with the checks before you press play.

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