Audeze MM-520 Planar Magnetic Headphones vs Campfire Audio Grand Luna Planar Magnetic-BA Hybrid IEMs
Right now Campfire Audio Grand Luna Planar Magnetic-BA Hybrid IEMs is $300 cheaper, measured across the retailers we track. Both figures come from offers that passed our freshness and variant checks.
| Measure | Audeze MM-520 Planar Magnetic Headphones | Campfire Audio Grand Luna Planar Magnetic-BA Hybrid IEMs |
|---|---|---|
| Best verified price now | $1,699 | $1,399 |
| Typical price recorded | $1,699 | $1,399 |
| Real saving vs typical | At typical price | At typical price |
| Deal Score | 50 / 100 · Typical price | 40 / 100 · Weak deal |
| Range recorded | $1,699 – $1,699 | $1,399 – $1,399 |
| Price stability | high | high |
| Stores tracked | 12 | 2 |
| Fresh offers | 12 | 2 |
| Days of recorded history | 5 | 5 |
| Last market update | 1d ago | 3d ago |
Where they differ
1 of 5 stated specifications differ| Specification | Audeze MM-520 Planar Magnetic Headphones | Campfire Audio Grand Luna Planar Magnetic-BA Hybrid IEMs |
|---|---|---|
| Wearing style | Over-ear | In-ear |
| Driver | Planar magnetic | Planar magnetic |
| Enclosure | Open-back | not stated |
| Connection | Wired | not stated |
| Connector | not stated | MMCX |
Campfire Audio Grand Luna Planar Magnetic-BA Hybrid IEMs
Campfire Audio · Headphones
See all 2 offers and price historyHow to read this comparison
Every figure here is measured by UponSale rather than supplied by a retailer. The “real saving” column compares today’s best verified price to the price each product normally sells for across the stores we track — not to a retailer’s crossed-out figure.
How we calculate this
Where prices come from. We read the product data each retailer publishes on its own site, unhurriedly and within the rules that retailer sets. We never work around an access control and we never buy collected data of uncertain provenance.
What “verified” means. An offer can win best price only if it is inside our freshness window, matched to the exact variant, in stock, and free of an unresolved price anomaly. “Best verified price” means lowest among the fresh offers we track — not the lowest price on the internet.
How history works. Every price we observe is stored with its source and timestamp. Daily market low, median and high come from those observations, so the price history on this page is ours, not a retailer’s claim.
What we exclude. Stale offers, mismatched variants, bundles compared against single items, and prices that move implausibly without corroboration from another store.
Images. Product photographs come from the retailer they sit beside, loaded from their own image host. We do not re-host them and claim no rights in them.