Short answer: a tie on sound quality. Both are rated 3.7/5 (#681 and #664 of 1291 in-ear headphones) at nearly the same price ($194.99 vs $199), so choose on features and fit.
What the Pula Anvil114 does well: A broadly balanced tuning with a preference score of 70 against the Harman target. The tradeoff: An uneven response, 2.2 dB standard deviation from target.
The case for the Rumaudio Blues: An all balanced armature IEM with six drivers per side. The tradeoff: Bass sits about 2.0 dB below target, so it sounds lean.
Buy the Pula Anvil114 or the Rumaudio Blues on features: they are rated the same for sound quality at close to the same price.
Looking for alternatives? See the complete Headphones rankings.
A broadly balanced tuning with a preference score of 70 against the Harman target.
HiFiGo $194.99 eBay
An all balanced armature IEM with six drivers per side.
Shenzhenaudio $199.00 eBayPrices on this page were last checked October 16, 2026 at 5:46 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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Specifications Side By Side
| Pula Anvil114 | Rumaudio Blues | |
|---|---|---|
| Price | $194.99 | $199.00 |
| Ranked | #681 of 1291 in In-Ear Headphones | #664 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 70 (median of 10 squig.link measurements, calibrated to AutoEQ) | 70 (median of 4 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 2.18 dB standard deviation | 2.43 dB standard deviation |
| Tonal Tilt | -0.36 (negative is warmer, positive brighter) | +0.25 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-2.2 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-4.7 dB at 30 Hz) |
| Connection | Wired (3.5mm / 4.4mm) | Wired |
| Driver Type | Tribrid | Balanced Armature |
| Drivers | 1 Dynamic, 4 Balanced Armature, 1 Bone Conduction | 6 x balanced armature |
Frequency Response Compared
Both headphones’ measurements overlaid on the Harman target. Above the target sounds louder in that range, below it quieter. Each curve is the median of several independent measurements, shifted so its 500 Hz to 2 kHz average sits at 0 dB, so only the tuning is compared.
Measurement data: the Pula Anvil114 from atechreviews, boizoff, elrics, iemocean, jaytiss, silicagel, sl0the, soundcheck39, soundignity, superreview and tonedeafmonk; the Rumaudio Blues from audioamigo, bedrock, flare and soundcheck39, all via squig.link.
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