Vinyl collecting has its own language. Some of it is obvious, some of it takes a few crate digs to pick up, and some of it gets thrown around in listings without explanation. This glossary covers every term you'll encounter as a collector — from condition grades to pressing details to the anatomy of a record itself.
Organized alphabetically. Each term links to relevant guides where applicable.
A–D
180 Gram
A record pressed on heavier vinyl than the standard 120–140 gram weight. 180 gram pressings are more rigid, less prone to warping, and are often marketed as "audiophile" quality. The heavier weight doesn't inherently improve sound — that depends on the mastering and pressing quality — but it does improve durability and handling.
Acetate
A one-off disc cut directly from a lathe, used for test listening before a full pressing run. Acetates are fragile, degrade with each play, and are extremely rare as collector items. Not to be confused with a test pressing, which is an actual pressed record.
Anti-Static Sleeve
An inner sleeve made from polyethylene or polypropylene-lined material, designed to reduce static buildup and protect the record surface. Replacing paper inner sleeves with anti-static sleeves is one of the simplest ways to preserve your collection.
Bootleg
An unauthorized pressing of an album, often sourced from unofficial recordings (live concerts, radio broadcasts) or duplicated from an official release without the label's permission. Bootlegs vary wildly in quality and legality. Some are prized by collectors for containing material unavailable elsewhere.
Catalog Number
The unique identifier assigned by the record label to a specific release. The catalog number distinguishes between different pressings, regional releases, and reissues of the same album. It's printed on the record label, the spine, and usually the back cover. In Cratewise, the catalog number is a primary identifier — more reliable than the album title alone.
Center Label
The paper label affixed to the center of the record on both sides. Labels carry the catalog number, track listing, artist name, and often copyright information. Label design, color, and text variations are key tools for identifying specific pressings.
Colored Vinyl
Any record pressed on non-black vinyl — transparent, translucent, splatter, marble, picture disc, or solid color. Colored vinyl is increasingly common in new releases and limited editions. Whether colored vinyl sounds different from black vinyl is debated, but for most playback systems the difference is negligible.
Compilation
A record containing tracks by various artists or tracks collected from multiple releases by a single artist. Compilations are typically not first pressings of the songs they contain.
Condition Grade
The standardized assessment of a record's physical and audible quality, rated on the Goldmine scale from Mint (M) to Poor (P). See the full vinyl record grading guide for details on each grade.
Crate Digging
The act of browsing through bins or crates of records — at shops, flea markets, garage sales, or thrift stores — looking for finds. Crate digging is as much about the hunt as the result. The term has roots in hip-hop culture, where producers dug through crates to find samples.
Cutout
A record marked by the label as a remainder or overstock, indicated by a notch cut into the sleeve corner, a hole punched through the barcode, or a saw mark across the spine. Cutouts were sold at discount and are common in used bins. The cutout mark affects the sleeve grade but not the record grade.
Dead Wax
The smooth, ungrooved area between the last track and the label. The dead wax (also called the run-out groove or matrix area) often contains stamped or hand-etched information: matrix numbers, pressing plant codes, mastering engineer initials, and sometimes messages. Dead wax markings are one of the most reliable ways to identify a specific pressing.
Deep Groove
A physical groove pressed into the label area of certain records, notable on early Blue Note, Prestige, and Columbia pressings. The presence or absence of a deep groove helps date and authenticate original pressings from these labels.
Disc Jockey Copy (DJ Copy)
A promotional record sent to radio stations or DJs before the album's commercial release. DJ copies often have white labels (hence "white label promo"), timing strips, or "Not for Sale" stamps. They're identical to commercial pressings sonically but are valued by collectors for their rarity and provenance.
E–H
EP (Extended Play)
A record format between a single and a full-length LP, typically containing 4–6 tracks. EPs are usually pressed on 7" or 10" discs at 33⅓ or 45 RPM. The format has seen a resurgence in limited vinyl releases.
First Pressing
The initial batch of records produced from the original master lacquer or stampers. First pressings are valued because they're cut closest to the original master tape, often resulting in superior sound quality. Identifying a first pressing involves checking the catalog number, dead wax markings, label design, and pressing plant codes. See also: original pressing.
Gatefold
A record sleeve that opens like a book, with artwork, liner notes, or photos on the inside panels. Gatefold sleeves are typically reserved for special releases, double LPs, or albums with extensive artwork. The gatefold format affects sleeve condition — hinges can wear or split along the fold.
Goldmine Standard
The most widely used condition grading system for vinyl records in the US, originally published by Goldmine magazine. The scale runs from Mint to Poor with seven grades. See the complete grading guide for details.
Groove Wear
Damage to the record's grooves caused by repeated play, a worn or misaligned stylus, or excessive tracking force. Groove wear manifests as audible distortion, sibilance, or a "fuzzy" quality in the high frequencies. Unlike surface scratches, groove wear is permanent and typically not visible to the naked eye.
I–L
Import
A record pressed in a different country than the listener's market. Japanese imports (often identified by the OBI strip) are particularly valued for their pressing quality and additional inserts. UK and European pressings of American albums — and vice versa — often use different masters and can sound noticeably different.
Inner Sleeve
The sleeve that directly holds the record inside the outer jacket. Inner sleeves come in paper (standard), polyethylene-lined (anti-static), or plain polyethylene. Upgrading to anti-static inner sleeves is a basic collection care step.
Jacket
The outer cover of a record, usually made of cardboard with printed artwork. "Jacket" and "sleeve" are often used interchangeably in casual conversation, though technically the jacket is the outer cover and the sleeve is the inner holder.
Lacquer
The master disc used to create the metal stampers that press records. The lacquer is cut on a lathe by the mastering engineer and is extremely delicate — it's used to create the stamper molds and then retired. The quality of the lacquer cut directly affects every record pressed from it.
LP (Long Play)
A full-length record, typically 12 inches in diameter and played at 33⅓ RPM. An LP usually holds 20–25 minutes of audio per side. The term dates to the format's introduction by Columbia Records in 1948, distinguishing it from the 78 RPM records that preceded it.
M–P
Matrix Number
The alphanumeric code stamped or etched in the dead wax area, identifying the specific master used to press the record. Matrix numbers are the most reliable way to trace a pressing to its source — the mastering engineer, the cutting lathe, the pressing plant, and even the pressing run. Two copies of the "same" album with different matrix numbers can sound meaningfully different.
Mono
A record mixed and/or cut for single-channel playback. Early records (pre-1968 for most labels) were released in mono, and many collectors prefer original mono mixes for their intended balance and often punchier sound. Playing a mono record on a stereo system is fine — the same signal plays through both channels.
NM (Near Mint)
The highest realistic grade for a used record. A Near Mint record shows virtually no signs of play and produces no audible surface noise. See condition grades.
OBI Strip
A paper band wrapped around the spine of a record sleeve, common on Japanese pressings. OBI strips contain pricing, catalog information, and promotional text in Japanese. Records with intact OBI strips command higher prices because the strips are easily discarded or damaged.
Original Pressing
The first commercially available pressing of an album, as opposed to subsequent reissues or remastered editions. "Original pressing" and "first pressing" are often used interchangeably, though some collectors distinguish between the original lacquer run (first pressing) and later runs from the same stampers (still original, but not first pressing).
Pressing
The physical act of manufacturing a vinyl record by stamping heated PVC between two metal stampers. "Pressing" also refers to a specific production run — a "UK pressing" was manufactured in the United Kingdom, while a "1973 pressing" was manufactured in that year. Cratewise always uses "pressing" instead of "edition" or "version" to maintain collector-standard vocabulary.
Pressing Plant
The manufacturing facility where records are physically produced. Different pressing plants produce different sonic and physical qualities even from the same stampers. Notable historical plants include Sterling Sound, Specialty Records, and Pallas (Germany). Pressing plant identification is part of advanced pressing research.
Picture Disc
A record with artwork printed directly onto the playing surface, visible through a thin transparent vinyl layer. Picture discs are visually striking but generally deliver lower sound quality due to the printing layer between the stylus and the groove. They're collected primarily as display pieces.
Promo (Promotional Copy)
A record distributed for promotional purposes, not retail sale. Promos are often marked with white labels, gold stamps, timing strips, or hole punches. They're pressed from the same stampers as commercial copies and are valued for rarity and provenance.
Q–T
Quadraphonic
A four-channel audio format from the 1970s, requiring a compatible playback system. Quadraphonic records are a niche collectible — most can be played on standard stereo systems, but the quad mix only activates with the correct decoder and four speakers.
Record Store Day (RSD)
An annual event (typically in April) celebrating independent record stores with exclusive, limited-edition vinyl releases. RSD pressings are often colored vinyl, special packaging, or previously unreleased material. Releases are announced weeks in advance, and lines at participating shops can be significant.
Reissue
A later pressing of an album, produced after the original pressing run. Reissues may use the same masters, new remasters, different artwork, or different label imprints. Some reissues are highly valued (Analogue Productions, Mobile Fidelity), while others are budget pressings of lower quality.
Remaster
A new version of the original master tape, processed with updated equipment or techniques. A remaster doesn't necessarily mean better — some audiophile remasters are definitive improvements, while others are controversial for altering the original sound. "Remastered" on a label doesn't tell you whether the remaster was done well.
RPM (Revolutions Per Minute)
The speed at which a record rotates on the turntable. Standard speeds: 33⅓ RPM for LPs, 45 RPM for singles and some audiophile pressings, and 78 RPM for pre-LP shellac records. Playing a record at the wrong speed is a common beginner mistake — the pitch and tempo will be obviously wrong.
Run-Out Groove
The continuous locked groove at the end of a record side that keeps the stylus from running into the label. Also used loosely to refer to the dead wax area. Some records have unique run-out grooves — endless loops, locked grooves with hidden audio, or spiral patterns.
Sealed
A record still in its original shrink wrap or factory packaging, never opened. Sealed records are graded Mint by default, though the seal itself should be verified as original — resealing is a known issue in the secondary market.
Shellac
The material used for 78 RPM records before vinyl (PVC) became standard. Shellac records are brittle, heavy, and play at a different speed than modern records. They require a different stylus and are a distinct collecting category.
Side
One playing surface of a record. A standard LP has two sides — Side A and Side B. Double LPs have four sides. Collectors and Cratewise use "sides" when referring to the playable surfaces, never "tracks" (which refer to individual songs).
Stamper
The metal disc created from the master lacquer, used in the pressing plant to physically stamp grooves into heated vinyl. Stampers degrade with use — early stampers produce cleaner pressings, which is one reason first pressings often sound better. Stamper numbers in the dead wax can indicate how early in the run a specific copy was pressed.
Stereo
A two-channel audio format, standard for most records pressed after the mid-1960s. Early stereo mixes (1958–1968) are sometimes considered inferior to their mono counterparts, as stereo mixing techniques were still evolving. By the 1970s, stereo became the default and only format for most releases.
Test Pressing
A small batch of records (usually 5–25 copies) pressed before the full production run, used by the label and artist to approve sound quality. Test pressings typically come in plain white or brown sleeves with handwritten or typed labels. They're among the rarest items a collector can own.
U–Z
VG+ (Very Good Plus)
The most important grade for practical collecting. A VG+ record shows light signs of play but produces only occasional, minor surface noise. Full breakdown in the grading guide.
Vinyl (the material)
Polyvinyl chloride (PVC), the plastic compound used to manufacture records since the late 1940s. Replaced shellac as the standard material due to its durability, lighter weight, and ability to hold finer grooves. Note: "vinyl" refers to the material. The object is a "record." Cratewise never uses "vinyls" as a plural noun.
Warp
A physical deformation of the record's flat surface, causing it to undulate during playback. Minor warps may be inaudible; severe warps cause the stylus to skip or produce audible pitch wobble. Warps are typically caused by heat exposure, improper storage (leaning rather than vertical), or manufacturing defects. Some warps can be corrected with careful flattening techniques, but results vary.
White Label
A promotional or test pressing with a plain white label instead of the standard printed label. White labels are distributed to radio stations, DJs, and press before the commercial release. The term is also used in electronic music to describe anonymous or artist-undisclosed releases.
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