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.
Integrated amplifier
below typical
Among the 59 integrated 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.
Arcam Radia A15+ — mid-tier Radia Plus; refreshed 2025 over A15 (2023, What HiFi 2023 Award winner). 80W/8Ω + 120W/4Ω Class AB discrete. ESS ES9018 DAC, MM phono, NEW HDMI eARC for TV integration. "+" refresh adds: transformer upgrade reducing unwanted current; HDMI eARC support.
What HiFi (2023, A15 original): "wonderfully commanding and controlled performer. It excels in terms of grip and composure, delivering way more in terms of scale and authority when compared to its little brother."
KEY DIFFERENCE vs A5+: ~60% more power (80W vs 50W into 8Ω) + 4Ω-stable + HDMI eARC; same DAC + same phono + same Bluetooth.
Speaker pairing: 80W/8Ω + 120W/4Ω handles ≥85dB-sensitivity speakers in mid-large rooms confidently. Forum reports good pairings with KEF LS50 Meta, Spendor Classic 4/5, Dynaudio Evoke 20, Monitor Audio Studio 89.
CATALOG CORRECTION: original IAG ownership note was wrong — Arcam is Harman International (Samsung), not IAG.
Assessed against 19 rivals across the sixty systems: 2 head-to-heads won, 58 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.
8 lost · Artisan, Cavity-Native, Characterful, Intimate, PRaT, Reference, Romantic, Silent Path
Against the Characterful brief, the NVA S80 Stereo keeps the slot decisively.
5 lost · Anchored, Characterful, PRaT, Romantic, Silent Path
Against the Characterful brief, the Audiolab 9000P keeps the slot decisively.
4 lost · BBC Sound, Twin Arms
Against the Twin Arms brief, the Sugden ANV 50 keeps the slot decisively.
On its own merits the Arcam A15+ 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.
It sits well below the share of the budget this brief aims at the integrated amplifier position.
4 lost · Cavity-Native, Characterful, Romantic
Against the Cavity-Native brief, the Leema Hydra II keeps the slot decisively.
4 lost · Artisan, Cavity-Native, Intimate, Reference
Against the Intimate brief, the NVA S300 Stereo (Artisan) keeps the slot decisively.
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 Arcam A15+ is the stronger integrated amplifier — but it loses here on fit: the pairing with the Tom Evans Groove+ SRX MkII gives up tonal body under the Vocals-First weighting.
It sits well below the share of the budget this brief aims at the integrated amplifier position.
3 lost · Intimate, Silent Path
Against the Silent Path brief, the Audio Note P1 SE keeps the slot decisively.
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 low-level clarity.
On its own merits the Arcam A15+ is the stronger integrated amplifier — but it loses here on fit: the pairing with the Rega Aura Reference MC gives up low-level clarity under the BBC Sound weighting.
3 lost · Artisan, PRaT, Reference
Against the Artisan brief, the Exposure XM9 Biamp 2x2 (4 units) keeps the slot decisively.
2 lost · Intimate
Against the Intimate brief, the EAR Yoshino 890 keeps the slot decisively.
1 lost · Cavity-Native
Against the Cavity-Native brief, the Chord ULTIMA 6 keeps the slot decisively.
1 lost · Anchored
Against the Anchored brief, the Longdog Audio P6100M (pair) keeps the slot decisively.
1 lost · Twin Arms
Against the Twin Arms brief, the Exposure 3510 keeps the slot clearly.
On its own merits the Arcam A15+ is the weaker integrated amplifier for that brief.
It sits well below the share of the budget this brief aims at the integrated amplifier position.
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 low-level clarity.
With the Harbeth P3ESR XD2, the pairing gives up most on low-level clarity.
On its own merits the Arcam A15+ is the stronger integrated amplifier — but it loses here on fit: the pairing with the Naim NVC TT MM/MC gives up low-level clarity under the BBC Sound weighting.
1 lost · Vocals-First
Against the Vocals-First brief, the Leak Stereo 230 keeps the slot by a whisker.
On its own merits the Arcam A15+ is the weaker integrated amplifier for that brief.
1 lost · Silent Path
Against the Silent Path brief, the Quad Artera Stereo keeps the slot decisively.
0 lost· 1 won · Twin Arms
Against the Twin Arms brief, the Arcam A15+ takes the slot clearly.
On its own merits the Arcam A15+ is the stronger integrated amplifier for that brief.
0 lost· 1 won · BBC Sound
Against the BBC Sound brief, the Arcam A15+ takes the slot by a whisker.
On its own merits the Arcam A15+ is the stronger integrated amplifier for that brief.
With the Falcon Q7 Complete@Home, the pairing gains most on bass control.
excels in terms of grip and composureWhat HiFi A15 review 2023
wonderfully commanding and controlled performer What HiFi A15 review 2023· Presence & articulation
stereo imaging is expansive, stable and nicely layered What HiFi A15 review 2023· Spatial naturalness
excels in terms of grip and composure What HiFi A15 review 2023· Bass control
no shortage of punch and power What HiFi A15 review 2023· Physical impact
dynamic nuances are conveyed with finesse What HiFi A15 review 2023· Micro-dynamic resolution
| power 8ohm w | 80.0 |
|---|---|
| power 4ohm w | 120.0 |
| power class | AB |
| damping factor | 100.0 |
| line inputs | 3 |
| line input sensitivity mv | 380.0 |
| line input impedance kohm | 47.0 |
| has phono | True |
| phono mm | True |
| phono mc | False |
| phono mm load | 47kΩ + 100pF |
| pre out | True |
| pre power separable | pre_out_parallel |
| internal bass management | none |
| headphone out | True |
| frequency response hz | 20/20000 |
| snr db | 102.0 |
| thd pct | 0.03 |
| dimensions mm | 431/98/344 |
| weight kg | 10.0 |
| integrated dac | True |
| digital inputs | 5 |
| notes |