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.
Rega Osiris
Integrated amplifier
Relative price
above typical
Among the 59 integrated amplifiers in the catalogue, this one is above 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
POWER: 8 Sanken output transistors, twin 400VA toroidal transformers, 40,000μF reservoir capacity per channel. Cascade differential input stage. Rega's most ambitious integrated — designed to compete at separates level.
TONAL TARGET: Rega explicitly tunes Osiris toward tube-like balance — density, depth, precise tonal balance. Significantly different voicing philosophy from typical solid-state integrateds.
Competition record
Assessed against 15 rivals across the sixty systems: it takes the slot in none of its 48 head-to-heads.
Where it gives ground
The dimension the engine names as the weakest link, counted across every head-to-head it lost.
- tonal body ×6
- low-level clarity ×3
- timing and drive ×3
Who it comes up against
Sugden ANV 50
4 lost · BBC Sound, Twin Arms
Against the Twin Arms brief, the Sugden ANV 50 keeps the slot decisively.
On its own merits the Rega Osiris is the stronger integrated amplifier — but it loses here on fit: the way it sits with the rest of this system under the Twin Arms weighting.
Leema Hydra II
4 lost · Cavity-Native, Characterful, Romantic
Against the Cavity-Native brief, the Leema Hydra II keeps the slot decisively.
Audiolab 9000P
4 lost · Characterful, PRaT, Romantic, Silent Path
No completion of this shape fits that slot's budget.
NVA S300 Stereo (Artisan)
4 lost · Artisan, Cavity-Native, Intimate, Reference
No completion of this shape fits that slot's budget.
Icon Audio Stereo 30 SE (KT150)
3 lost · Vocals-First
Against the Vocals-First brief, the Icon Audio Stereo 30 SE (KT150) keeps the slot clearly.
With the Tom Evans Groove+ SRX MkII, the pairing gives up most on tonal body.
On its own merits the Rega Osiris is the weaker integrated amplifier for that brief.
Audio Note P1 SE
3 lost · Intimate, Silent Path
Against the Silent Path brief, the Audio Note P1 SE keeps the slot decisively.
EAR Yoshino V12
3 lost · BBC Sound, Vocals-First
Against the BBC Sound brief, the EAR Yoshino V12 keeps the slot decisively.
With the Rega Aura Reference MC, the pairing gives up most on low-level clarity.
With the Falcon LS3/5a Gold Badge, the pairing gives up most on timing and drive.
On its own merits the Rega Osiris is the weaker integrated amplifier for that brief.
handles macro/micro dynamic shifts more effectively than any integratedThe Absolute Sound, Martens, 2011
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 decisively.
EAR Yoshino 890
2 lost · Intimate
Against the Intimate brief, the EAR Yoshino 890 keeps the slot decisively.
Chord ULTIMA 6
1 lost · Cavity-Native
Against the Cavity-Native brief, the Chord ULTIMA 6 keeps the slot decisively.
Longdog Audio P6100M (pair)
1 lost · Anchored
No completion of this shape fits that slot's budget.
Exposure 3510
1 lost · Twin Arms
Against the Twin Arms brief, the Exposure 3510 keeps the slot clearly.
On its own merits the Rega Osiris is the weaker integrated amplifier for that brief.
It sits well above the share of the budget this brief aims at the integrated amplifier position.
Sugden A21 Signature
1 lost · BBC Sound
Against the BBC Sound brief, the Sugden A21 Signature keeps the slot decisively.
With the Naim NVC TT MM/MC, the pairing gives up most on tonal body.
With the Harbeth P3ESR XD2, the pairing gives up most on timing and drive.
On its own merits the Rega Osiris is the weaker integrated amplifier for that brief.
warm-ish organic tones with detail in abundanceHead-Fi A21SE Signature review
handles macro/micro dynamic shifts more effectively than any integratedThe Absolute Sound, Martens, 2011
Quad Artera Stereo
1 lost · Silent Path
Against the Silent Path brief, the Quad Artera Stereo keeps the slot decisively.
What the reviewers said
Rega ultra-flagship integrated, 162W/8Ω Rega Osiris + HiFi and Music Source review· Physical impact
handles macro/micro dynamic shifts more effectively than any integrated The Absolute Sound, Martens, 2011· Dynamic coherence
a brilliant soundstager, expands dramatically in depth and width The Absolute Sound, Martens, 2011· Spatial resolution
phenomenally good job of reproducing low-level sonic details The Absolute Sound, Martens, 2011· Micro-dynamic resolution
turn-on-a-dime ability to explode into fast-breaking swells The Absolute Sound, Martens, 2011· Transient attack
bass firm and well fleshed out, no sign of faltering audioFi.net, Pavithran, 2012· Bass control
an inky backdrop and well-defined air audioFi.net, Pavithran, 2012· Electrical noise floor
How it scores
Clarity
- Electrical noise floor 76 from listening evidence
- Spatial resolution 82 from listening evidence
Rhythm
- Transient attack 76 from listening evidence
Bass
- Bass control 76 from listening evidence
- Physical impact 82 from listening evidence
- Bass extension 66 from specification
LowerVolume
- Low-level noise floor 72 from specification
- Micro-dynamic resolution 76 from listening evidence
- Tonal consistency 72 from specification
Specifications
| power 8ohm w | 162.0 |
|---|---|
| power 4ohm w | 250.0 |
| power class | AB |
| damping factor | 60.0 |
| line inputs | 5 |
| xlr inputs | 1 |
| line input sensitivity mv | 220.0 |
| line input impedance kohm | 22.0 |
| has phono | False |
| pre out | True |
| pre out level v | 0.215 |
| pre power separable | true_break |
| internal bass management | none |
| headphone out | True |
| frequency response hz | 10/75000 |
| thd pct | 0.05 |
| weight kg | 25.0 |
| notes |