AmperHeads exists to answer one question well: which amplifier actually suits your headphones? This page explains how every recommendation on the site is produced, so you can judge how much weight to give it.

1. The pairing math (done for every guide)

Before a single listening note, each headphone in a pairing guide gets a power budget calculated from its published specs:

  • Target level: 110 dB SPL peaks (loud, dynamic music with headroom; typical listening is 75–85 dB).
  • Inputs: manufacturer impedance and sensitivity (dB/mW or dB/V), converted where needed.
  • Outputs: required voltage (V RMS), current (mA) and power (mW) at the target level.
  • Amp check: the amp’s rated output at that impedance must exceed the requirement with at least ~6 dB headroom, and its output impedance should be under 1/8 of the headphone impedance for planar/low-Ω dynamic loads.

Amps that fail the arithmetic are excluded, however good they sound elsewhere. Amps that pass are then compared by ear.

2. Listening

  • Volume matched by ear at 80–85 dB, same source, same tracks, at least a week of daily use per amp before an opinion is recorded.
  • Reference chain in 2026: Topping DX3 Pro+ → JDS Labs Atom Amp+ (single-ended) / Drop THX AAA 789 (balanced). Anchor headphones: Sennheiser HD 600 and Beyerdynamic DT 880 Pro 250Ω.
  • Core test tracks are listed inside genre guides (jazz, classical) so you can reproduce the comparison.

3. Ratings (reviews only)

Each reviewed product carries a 1–5 rating. It is one editor’s rating, not an aggregate of user reviews, and the schema on the page says exactly that. The score weighs, in order: sound for the price, amplification behaviour (how forgiving of source/amp), build and comfort, and long-term value (parts, resale, longevity). A 4.5+ means “buy without hesitation in its class”; under 3.5 means we would not recommend it at its current price.

4. Third-party measurements

We do not own a measurement rig. Where an article cites frequency response, distortion or output-power figures, they come from published measurements at Audio Science Review or RTINGS, and the article names the source. We never present someone else’s measurement as our own, and we never invent numbers.

5. Photos

Product images on review pages are manufacturer or retailer press images unless captioned otherwise. We are gradually replacing them with our own photographs of units in hand; when an article contains our own photos, the caption says so.

6. Freshness

Prices, availability and “best of” lists move. Every article shows a Published and Updated date. Top-traffic pages are re-checked at least quarterly; discontinued products are marked or replaced; the “Updated” date only changes when the content genuinely changed.

AmperHeads earns a commission on purchases made through Amazon links (and, in future, B&H Photo / Sweetwater). This never affects which product is recommended: several top picks on this site (Schiit, JDS Labs) sell direct with no affiliate program at all, and we say so. Full details: Affiliate Disclosure .

8. Corrections

If we got something wrong — a spec, a price, a pairing that didn’t work for you — tell us . Articles are updated and the change noted.

Written and maintained by Elliot Marsh .