This site is still being built up - our instrument listings grow continuously. If you can't find what you're looking for yet, feel free to check back again soon.
Find all the information on your dream instrument: specs, dealers, prices – all in one place.
Technical specs, history, rarity and price range – plus matching dealers with the lowest offer. Instead of checking many sites one by one, you find everything here in one place. Independent and free.
Discover instrumentsLooking for information on a specific instrument?
Search by brand and model to see price range, rarity, technical specs and matching dealers at a glance.
Instruments & InfoWant to see the estimated value of your own instrument?
Our database covers a wide range of the most popular instruments.
Estimate My InstrumentWhat to watch for when buying and selling.
Our guides give you answers on the most important topics around used instruments.
Guidestone-index.com is an independent information and comparison site for musical instruments. For every model you get technical specs, history, rarity, price range and matching dealer offers in one place. We don't sell anything ourselves – you decide where to buy.
How it works
From your first search to buying from the dealer of your choice - no prior knowledge required and free of charge, in just a few minutes you find all the key information on your dream instrument.
Discover instrumentsFind an instrument
Use the filters on Instruments & Info to set your expectations for your future instrument: price range, sound character, manufacturer - you decide.
All the information at a glance
We collect what is scattered across the web about an instrument and bring it together on one page: technical specs, history and background, a rarity scale, plus price range and price history of recent weeks. Prices and dealers are just one part of it - you no longer have to search many sites one by one.
Find listings
For every instrument we link to several listings across different marketplaces and dealers. We search across platforms to find the best deals for you - you decide.
Buy from the dealer you choose
You decide where to buy - we don't sell directly, we link straight to the original listing on the respective platform. The actual purchase happens wherever you feel most comfortable. You support us by using our link when you buy - in return we offer our service free of charge.
Why is this free?
tone-index.com is completely free to use and funded entirely through affiliate commissions on the linked listings. Buying through a link on an instrument page never costs you a cent more - it helps us keep the service running, keep improving it, and keep growing the database. If tone-index.com has been useful to you, please use the linked listings for your next purchase.
Who is this site for?
Whether you're buying, selling, collecting, or just starting out - here's how tone-index.com helps.
You want to buy an instrument
Here you find specs, history, rarity and price range in one place - plus matching dealers with the best price right alongside. So you know before buying what you're getting and whether an offer is fair.
You don't know how much you can sell your instrument for
Thinking about selling your instrument? Read up on the model, its special features and the market, and use the price estimate to get a picture of the market and set a fair price.
You passionately collect rare instruments
History, background, the rarity scale and price history show you what makes a model special - and whether it's worth waiting or better to act fast.
You're just starting out and looking for answers
Technical specs, sound character and our buying guides give you a solid basis - and the instrument finder helps you discover what suits you.
Instruments you can find here
From electric guitars to concert grand pianos: every instrument is grouped into one of four broad families, so you'll find your way even if you don't yet know exactly what you're looking for. Click any category to jump straight to a pre-filtered overview.
String Instruments
From electric guitars to harps - the largest and most varied category on the used market, from beginner models to sought-after vintage pieces. That includes electric, acoustic and classical guitars, bass guitars, banjos, mandolins and ukuleles, as well as classical strings like violin, viola, cello and double bass. For every model we show you the current price range, a rarity estimate and several listings side by side.
Keyboard Instruments
Grand pianos, upright pianos, digital pianos and synthesizers for home, studio or stage - acoustic and electronic alike. From a digital piano for your first lessons to a classic upright piano to a concert grand, plus accordions for folk music: for every model we show you the price range, rarity and matching listings.
Wind Instruments
From trumpets to clarinets - equally in demand in concert bands, jazz and orchestras. Whether saxophone, trombone, flute or clarinet: every wind instrument has its own sound character and its own market, from the school clarinet to the professional jazz saxophone. We rank every model by price and rarity.
Drums & Other
Complete drum kits, plus everything that doesn't fit into the other families. From an acoustic rock kit for your rehearsal space to a compact e-drum set for home, we bring together prices and listings across different marketplaces and dealers. You'll also find unusual percussion and other instruments that don't fit any other category, all gathered here.
What does ToneIndex do for you?
See the real market price.
We scan multiple platforms and dealer listings to show you what an instrument actually costs right now — so you can tell at a glance whether an offer is fair, cheap, or overpriced.
How hard is this instrument to find?
Some instruments are everywhere. Others rarely turn up. We show you how often a given model is currently listed — so you know whether it pays to wait or whether you should grab it now.
Your instrument. Your dealer. Your call.
We bring matching listings from different platforms together in one place. Once you've found your instrument, you decide where to buy it.
The market for used musical instruments is scattered: listings are spread across classifieds sites, specialized marketplaces, auctions and countless individual dealer websites. If you want to know whether a price is fair, or how hard a particular model actually is to find, you would normally have to search several platforms by hand and compare listings one by one.
That's exactly where we come in: we're independent of any single seller and bring together listings from multiple marketplaces and dealers in one place - objectively, with no sales interest of our own, and focused exclusively on musical instruments. For every instrument we link directly to the cheapest listing currently in our database, rate its rarity on a scale of 1-10, and break down price, technical specs and history. From beginner guitars to concert grand pianos, our wide instrument range currently spans 24 categories.
Using the site is completely free, quick and requires no registration - getting an estimate takes seconds. Our service costs you nothing extra: we don't charge you a commission and we always show transparently where a listing comes from. Our goal is a fast, objective assessment that both buyers and sellers can rely on.
Recently added
Questions that come up regularly when searching for instruments on our site.
The most important answers about pricing, data and how this site works.
1 What is tone-index.com and what do I get from it?
tone-index.com is an independent information and comparison site for musical instruments. We bring together information that is otherwise scattered – technical specs, history, rarity and price range – and show you matching dealers with the lowest offer. So you find everything about your instrument of choice in one place. We don't sell anything ourselves, and using the site is free.
2 How up to date are the prices?
Price ranges are based on publicly available listings. Our systems search the marketplaces daily and update prices accordingly. The figures are indicative, not a guarantee of the price actually achievable - the real sale price always also depends on the instrument's actual condition and the negotiation between buyer and seller.
3 How is the price range calculated?
We gather listings for the same or a very similar model and derive a range from the cheapest to the most expensive price currently observed. The price-history chart on every instrument page additionally shows how that range has developed over recent weeks.
4 What does the 1-10 rarity scale mean?
It shows how often a given model currently appears on the used market. 1 means very rare, 10 means very commonly available - at low values it can be worth acting quickly when a matching listing shows up.
5 Do you sell the instruments yourselves?
No. We bring together listings from different providers to help you find the right instrument, and link out to the respective marketplaces and dealers - the actual purchase, payment and shipping all happen there, not on our site. Our site is funded through affiliate links: using our links when you buy helps support us, so we can keep offering this service to you for free and keep improving it - at no extra cost to you.
6 Are the buy links affiliate links?
Some links are affiliate links. That means: if a purchase results from clicking one, we may earn a commission from the respective provider - at no extra cost to you. This revenue is important for funding our site, so we can keep offering the service for free and keep expanding it. See our privacy policy for details.
7 Can I get my own instrument estimated?
Yes - use "Estimate My Instrument" to enter brand, model and optionally the year, and get an instant automated price estimate based on comparable listings in our database. No email address or account is required.
8 What if the instrument I'm looking for isn't listed?
Your search is recorded anonymously so we can see which instruments are specifically being searched for and keep expanding our database accordingly. It's worth checking back and searching for the instrument again in a few days - we research continuously, and the database is updated every few days.
9 Where does the data come from?
From a wide variety of sources, which we collect, verify and process into a consistent format automatically - including technical specs and historical background for every model. That way you don't have to search across different sites yourself: we bring the information together from various data sources and present it to you clearly structured and sorted in one place.