Power amplifier
below typical
Among the 25 power amplifiers in the catalogue, this one is below 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.
NO BRIDGE MODE on the Quantum Graviton — Leema reserves bridge-mode capability for the Constellation Hydra II.
I/O: accepts both RCA and XLR. Loop-through line outputs for bi-amping.
Assessed against 19 rivals across the sixty systems: 6 head-to-heads won, 54 lost.
The dimension the engine names as the weakest link, counted across every head-to-head it lost.
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 Graviton is the weaker power amplifier for that brief.
85dB A-wtd S/N (some PSU hum)Hi-Fi News Lab (Miller) 2024
8 lost · Artisan, Cavity-Native, Characterful, Intimate, PRaT, Reference, Romantic, Silent Path
Against the Characterful brief, the NVA S80 Stereo keeps the slot decisively.
With the NVA P50 MKII, the pairing gives up most on vocal presence.
On its own merits the Leema Graviton 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.
It sits well above the share of the budget this brief aims at the power amplifier position.
85dB A-wtd S/N (some PSU hum)Hi-Fi News Lab (Miller) 2024
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.
With the Neat Petite Classic, the pairing gives up most on bass control.
On its own merits the Leema Graviton is the weaker power amplifier for that brief.
deep, tight, controlled bass without overbearingHiFiMART user review + Audio Tailor review
4 lost · Cavity-Native, Characterful, Romantic
Against the Cavity-Native brief, the Leema Hydra II keeps the slot decisively.
With the Emmae Reginae (custom), the pairing gives up most on bass control.
On its own merits the Leema Graviton is the weaker power amplifier for that brief.
It sits well below the share of the budget this brief aims at the power amplifier position.
Hydra II reference Leema stereo power ampLeema Hydra II positioning
4 lost · Artisan, Cavity-Native, Intimate, Reference
Against the Intimate brief, the NVA S300 Stereo (Artisan) keeps the slot decisively.
With the NVA P50SA MKII, the pairing gives up most on vocal presence.
On its own merits the Leema Graviton 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.
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 Graviton is the weaker power amplifier for that brief.
SET 8W/ch tube power amp, classic Audio Note voicingAudio Note P1 SE positioning + Hi-Fi+ reviews
3 lost · BBC Sound, Vocals-First
No completion of this shape fits that slot's budget.
3 lost · Artisan, PRaT, Reference
Against the Artisan brief, the Exposure XM9 Biamp 2x2 (4 units) keeps the slot decisively.
With the Emmae Reginae (custom), the pairing gives up most on timing and drive.
With the Exposure 3510 Preamplifier, the pairing gives up most on vocal presence.
On its own merits the Leema Graviton is the weaker power amplifier for that brief.
punches above its weightThe Ear (Butler) 2024
2 lost· 2 won · BBC Sound, Twin Arms
Against the Twin Arms brief, the Sugden ANV 50 keeps the slot clearly.
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 gives up most on low-level clarity.
On its own merits the Leema Graviton is the weaker power amplifier for that brief.
1 lost· 2 won · Vocals-First
No completion of this shape fits that slot's budget.
1 lost · Cavity-Native
Against the Cavity-Native brief, the Chord ULTIMA 6 keeps the slot decisively.
With the Emmae Reginae (custom), the pairing gives up most on bass control.
With the Music First Audio Baby Reference V2, the pairing gives up most on quietness at rest.
On its own merits the Leema Graviton is the weaker power amplifier for that brief.
85dB A-wtd S/N (some PSU hum)Hi-Fi News Lab (Miller) 2024
Ultima 6 stereo with high-frequency feed-forwardChord Ultima 6 stereo positioning
1 lost · Anchored
Against the Anchored brief, the Longdog Audio P6100M (pair) keeps the slot decisively.
With the Neat Petite Classic, the pairing gives up most on bass control.
With the NVA P50SA MKII, the pairing gives up most on quietness at rest.
On its own merits the Leema Graviton is the weaker power amplifier for that brief.
85dB A-wtd S/N (some PSU hum)Hi-Fi News Lab (Miller) 2024
1 lost · Twin Arms
No completion of this shape fits that slot's budget.
1 lost · Vocals-First
No completion of this shape fits that slot's budget.
1 lost · BBC Sound
No completion of this shape fits that slot's budget.
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 Graviton is the weaker power amplifier for that brief.
85dB A-wtd S/N (some PSU hum)Hi-Fi News Lab (Miller) 2024
0 lost· 1 won · Twin Arms
Against the Twin Arms brief, the Leema Graviton takes the slot decisively.
0 lost· 1 won · BBC Sound
Against the BBC Sound brief, the Leema Graviton takes the slot decisively.
Leema entry power amp Leema Graviton + What HiFi· Physical impact
drum beat punches through with richness The Ear (Butler) 2024· Physical impact
punches above its weight The Ear (Butler) 2024· Dynamic coherence
85dB A-wtd S/N (some PSU hum) Hi-Fi News Lab (Miller) 2024· Electrical noise floor
| is monoblock | False |
|---|---|
| is balanced internal | False |
| is dual mono | False |
| power class | AB |
| power 8ohm w | 150.0 |
| power 4ohm w | 260.0 |
| damping factor | 150.0 |
| accepts rca | True |
| accepts xlr | True |
| accepts din | False |
| input impedance rca kohm | 47.0 |
| input sensitivity rca mv | 380.0 |
| daisy chain out | True |
| speaker terminal type | binding post |
| speaker terminal count | 2 |
| gain db | 28.0 |
| sold as pair | False |
| notes |