Erzetich Charybdis vs STAX SR-007S: which should you buy?

On aggregated review scores the STAX SR-007S comes out ahead with a HearWiki score of 83. The full breakdown - sub-scores, specs and what reviewers actually said - is below.

Our pick: STAX SR-007S - Outstanding overall at around $2390.

Over-Ear

Score breakdown

Each axis is a 0–10 blend of what reviewers scored, not a lab measurement.

STAX SR-007S leads on 4 of 4 measures.

Erzetich Charybdis
STAX SR-007S

HearWiki score

Sound

9.4

9.5

Value

6.5

7.2

Price (USD)

$3,000

$2,390

Generation & platform

The scores rank quality. This is the other question: is the newer one actually newer technology, or the same platform in a new shell?

Same generation

The STAX SR-007S is 4 years newer, but it is the same generation of hardware: nothing in the radio, the codecs or the noise cancelling separates them. Nothing separates them on convenience features either, so the choice comes down to tuning and price. For 4 years between them, that is a thin return - treat this as a restyle rather than a new platform.

Charybdis2021
SR-007S20254 yr newer

Specifications

CharybdisSR-007S

Type: Over-Ear; Over-Ear
Price (USD): $3,000; $2,390
HearWiki score: 73; 83
Released: 2021; 2025
Availability: Discontinued; Sold new
Driver: 115 mm planar magnetic; 2× electrostatic
Driver type: planar; electrostatic
Driver size: 115 mm; -
Drivers per side: 1; 2
Frequency response: 20 Hz - 20 kHz; 6 Hz - 41 kHz
Impedance: 43 Ω; 145000 Ω
Sensitivity: 105 dB/mW; 101 dB/mW
Active noise cancelling: -; No
ANC type: -; none
Transparency mode: -; No
Companion app: -; No
Custom EQ: -; No
Wear detection: -; No
Controls: none; none
Weight: 740 g; 430 g
Detachable cable: Yes; Yes
USB-C: No; No
Pad material: leatherette; -
Connector: XLR; -
Balanced connection: Yes; -

Specification comparison of Erzetich Charybdis vs STAX SR-007S
Spec	Erzetich Charybdis	STAX SR-007S
Type	Over-Ear	Over-Ear
Price (USD)	$3,000	$2,390
HearWiki score	73 / 100 Great	83 / 100 Outstanding
Released	2021	2025
Audio
Driver	115 mm planar magnetic	2× electrostatic
Driver type	planar	electrostatic
Driver size	115 mm	-
Drivers per side	1	2
Frequency response	20 Hz - 20 kHz	6 Hz - 41 kHz
Impedance	43 Ω	145000 Ω
Sensitivity	105 dB/mW	101 dB/mW
Features
Active noise cancelling	-	No
ANC type	-	none
Transparency mode	-	No
Companion app	-	No
Custom EQ	-	No
Wear detection	-	No
Controls	none	none
Design
Weight	740 g	430 g
Detachable cable	Yes	Yes
USB-C	No	No
Pad material	leatherette	-
Connector	XLR	-
Balanced connection	Yes	-

What reviewers said

Erzetich Charybdis

No summary yet - we haven't aggregated enough reviews.

STAX SR-007S

The STAX SR-007S is a refined electrostatic flagship that builds on the classic Stax formula with updated internals and comfort-focused earpads. It delivers a spacious, highly detailed soundstage with warm bass and clear treble, all while maintaining a smooth, airy presentation. This wired, over-ear design is a perfectionist's choice for those seeking an evolutionary upgrade in high-end audio.

Pro:Spacious and precise soundstage
Pro:Warm, deep bass with clear highs
Pro:Improved comfort and reduced earcup resonance

Con:Requires a dedicated electrostatic amplifier
Con:Very high impedance limits portability
Con:No built-in controls or wireless features

Summaries are AI-condensed and paraphrased from published reviews and specs - not original hands-on testing. More on our method.

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New comparison Erzetich Charybdis STAX SR-007S