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Leema Hydra II

Power amplifier

Relative price

typical

Among the 25 power amplifiers in the catalogue, this one is typical.

A band places a component against its peers and carries no price. It is deliberately the only price indicator on this page: a second one, measured against a different set, would narrow the two together far enough to give the figure away.

What it is

Multimode: stereo / left-mono / right-mono / surround — all selectable via rear-panel toggles. Includes proprietary LIPS (Leema Intelligent Protocol System) bus for tight integration with Leema preamps (Pyxis II, Libra) — controls volume, source select, fixed gain.

Architecture: complete dual-mono with two 300VA toroids + 80,000μF capacitor banks per channel. Separate transformer for control circuit (galvanically isolated). NJL4281D/NJL4302D bipolar pairs.

I/O: 1 XLR + 3 RCA inputs (push-button select); 1 RCA pre-out for daisy-chain.

Competition record

Assessed against 18 rivals across the sixty systems: 8 head-to-heads won, 48 lost.

Where it gives ground

The dimension the engine names as the weakest link, counted across every head-to-head it lost.

  • quietness at rest ×19
  • vocal presence ×17
  • timing and drive ×8
  • low-level clarity ×6
  • bass control ×4
  • midrange truth ×3

Who it comes up against

Longdog Audio P6100M Biamp 2x2 (4 units)

13 lost · Anchored, Artisan, Characterful, PRaT, Reference, Romantic

Against the Anchored brief, the Longdog Audio P6100M Biamp 2x2 (4 units) keeps the slot decisively.

With the Emmae Reginae (custom), the pairing gives up most on bass control.

With the Audiolab 9000Q, the pairing gives up most on quietness at rest.

On its own merits the Leema Hydra II is the weaker power amplifier for that brief.

Hydra II reference Leema stereo power ampLeema Hydra II positioning

NVA S80 Stereo

8 lost · Artisan, Cavity-Native, Characterful, Intimate, PRaT, Reference, Romantic, Silent Path

Against the Characterful brief, the NVA S80 Stereo keeps the slot clearly.

With the NVA P50 MKII, the pairing gives up most on vocal presence.

With the Neat Iota 2, the pairing gains most on bass control.

On its own merits the Leema Hydra II is the stronger power amplifier — but it loses here on fit: the pairing with the NVA P50 MKII gives up vocal presence under the Characterful weighting.

Hydra II reference Leema stereo power ampLeema Hydra II positioning

Audiolab 9000P

5 lost · Anchored, Characterful, PRaT, Romantic, Silent Path

Against the Characterful brief, the Audiolab 9000P keeps the slot decisively.

With the Audiolab 9000Q, the pairing gives up most on vocal presence.

On its own merits the Leema Hydra II is the stronger power amplifier — but it loses here on fit: the pairing with the Audiolab 9000Q gives up vocal presence under the Characterful weighting.

THD just 0.002% at 1kHz, S/N >112dB A-weightedAudio Tailor 9000P review + manufacturer specs

NVA S300 Stereo (Artisan)

4 lost · Artisan, Cavity-Native, Intimate, Reference

Against the Intimate brief, the NVA S300 Stereo (Artisan) keeps the slot clearly.

With the NVA P50SA MKII, the pairing gives up most on vocal presence.

With the ProAc Tablette 10 Signature, the pairing gains most on bass control.

On its own merits the Leema Hydra II is the stronger power amplifier — but it loses here on fit: the pairing with the NVA P50SA MKII gives up vocal presence under the Intimate weighting.

Hydra II reference Leema stereo power ampLeema Hydra II positioning

Audio Note P1 SE

3 lost · Intimate, Silent Path

Against the Silent Path brief, the Audio Note P1 SE keeps the slot clearly.

With the Emmae Reginae (custom), the pairing gives up most on low-level clarity.

With the Music First Audio Baby Reference V2, the pairing gives up most on low-level clarity.

On its own merits the Leema Hydra II is the stronger power amplifier — but it loses here on fit: the pairing with the Emmae Reginae (custom) gives up low-level clarity under the Silent Path weighting.

SET 8W/ch tube power amp, classic Audio Note voicingAudio Note P1 SE positioning + Hi-Fi+ reviews
Hydra II reference Leema stereo power ampLeema Hydra II positioning

EAR Yoshino V12

3 lost · BBC Sound, Vocals-First

No completion of this shape fits that slot's budget.

Exposure XM9 Biamp 2x2 (4 units)

3 lost · Artisan, PRaT, Reference

Against the Artisan brief, the Exposure XM9 Biamp 2x2 (4 units) keeps the slot clearly.

With the Exposure 3510 Preamplifier, the pairing gives up most on vocal presence.

With the Emmae Reginae (custom), the pairing gains most on bass control.

On its own merits the Leema Hydra II is the stronger power amplifier — but it loses here on fit: the pairing with the Exposure 3510 Preamplifier gives up vocal presence under the Artisan weighting.

Hydra II reference Leema stereo power ampLeema Hydra II positioning

EAR Yoshino 890

2 lost · Intimate

Against the Intimate brief, the EAR Yoshino 890 keeps the slot decisively.

With the EAR Yoshino 868L (Line), the pairing gives up most on midrange truth.

With the Emmae Reginae (custom), the pairing gains most on bass control.

On its own merits the Leema Hydra II is the stronger power amplifier — but it loses here on fit: the pairing with the EAR Yoshino 868L (Line) gives up midrange truth under the Intimate weighting.

Hydra II reference Leema stereo power ampLeema Hydra II positioning

Chord ULTIMA 6

1 lost · Cavity-Native

Against the Cavity-Native brief, the Chord ULTIMA 6 keeps the slot clearly.

With the Music First Audio Baby Reference V2, the pairing gives up most on quietness at rest.

On its own merits the Leema Hydra II is the stronger power amplifier — but it loses here on fit: the pairing with the Music First Audio Baby Reference V2 gives up quietness at rest under the Cavity-Native weighting.

Longdog Audio P6100M (pair)

1 lost · Anchored

Against the Anchored brief, the Longdog Audio P6100M (pair) keeps the slot clearly.

With the NVA P50SA MKII, the pairing gives up most on quietness at rest.

On its own merits the Leema Hydra II is the weaker power amplifier for that brief.

Rega io

1 lost · Twin Arms

No completion of this shape fits that slot's budget.

Leak Stereo 230

1 lost · Vocals-First

No completion of this shape fits that slot's budget.

Creek 4040A

1 lost · BBC Sound

No completion of this shape fits that slot's budget.

Quad Artera Stereo

1 lost · Silent Path

Against the Silent Path brief, the Quad Artera Stereo keeps the slot clearly.

With the Music First Audio Baby Reference V2, the pairing gives up most on quietness at rest.

On its own merits the Leema Hydra II is the weaker power amplifier for that brief.

It sits well above the share of the budget this brief aims at the power amplifier position.

Sugden ANV 50

0 lost· 4 won · BBC Sound, Twin Arms

Against the Twin Arms brief, the Leema Hydra II takes the slot decisively.

Exposure 3510

0 lost· 1 won · Twin Arms

Against the Twin Arms brief, the Leema Hydra II takes the slot decisively.

Sugden A21 Signature

0 lost· 1 won · BBC Sound

Against the BBC Sound brief, the Leema Hydra II takes the slot decisively.

Systems it is part of

What the reviewers said

Hydra II reference Leema stereo power amp Leema Hydra II positioning· Bass control
totally in control Hifi Pig 2019 (Anniversary)· Bass control
neutral and balanced... authority The Audiophile Man 2019 (Anniversary)· Tonal body
bottom end too refined for Class-A grunt Hifi Pig 2019 (Anniversary)· Physical impact

How it scores

Clarity

  • Electrical noise floor 85 from specification

Voice

  • Tonal body 74 from listening evidence

Bass

  • Bass control 75 from listening evidence
  • Physical impact 66 from listening evidence
  • Bass extension 69 from specification

LowerVolume

  • Low-level noise floor 85 from specification
  • Micro-dynamic resolution 72 from specification
  • Tonal consistency 72 from specification

Specifications

is monoblockFalse
is balanced internalTrue
is dual monoTrue
power classAB
power 8ohm w148.0
power 4ohm w292.0
damping factor150.0
accepts rcaTrue
accepts xlrTrue
accepts dinFalse
input impedance rca kohm47.0
input sensitivity rca mv380.0
speaker terminal typebinding post
gain db28.0
snr db100.0
thd pct0.004
frequency response hz5/80000
dimensions mm440/110/320
weight kg18.0
sold as pairFalse
notes