What it is
Hi-Fi+ review (Sept 2024, Alan Sircom): "the most satisfying and musical pre and power combination available from Sugden... a two year period of developing unique circuit designs."
VCV CIRCUIT: Sugden's "Voltage-Current-Voltage" Class A folded-cascode topology — high-Z input → current gain stage (no attenuation) → folded cascode → Class A output. Wide bandwidth, low capacitive connectivity, tonal balance preserved across output level.
KEY DIFFERENCE FROM LA-4: Sapphire adds onboard 24/96 non-oversampling DAC (irrelevant to vinyl audit but useful for owners with mixed sources); fully-isolated PSUs for analogue + digital domains; lower output impedance for better long-cable + power-amp matching.
Native pairing: Sugden Sapphire FBA-800 power amp (Floating Bridge Class A 40W/8Ω) — designed-pair architectural advantage. Cross-brand: any high-sensitivity power amp with RCA or XLR input.
Note: NOT a Masterclass series successor — runs in parallel. LA-4 remains in production for buyers preferring older-school analogue-only minimalism. DAP-800 is for buyers wanting flagship Sugden VCV with modern dual-domain construction.
Who it comes up against
10 lost · Anchored, Artisan, Cavity-Native, Characterful, PRaT, Reference, Romantic, Silent Path
Against the Silent Path brief, the Music First Audio Baby Reference V2 keeps the slot decisively.
With the Whest Audio 60Se Pro, the pairing gives up most on quietness at rest.
With the Audio Note P1 SE, the pairing gives up most on quietness at rest.
On its own merits the Sugden Sapphire DAP-800 is the stronger preamplifier — but it loses here on fit: the pairing with the Whest Audio 60Se Pro gives up quietness at rest under the Silent Path weighting.
had not heard a better preampStereophile (Art Dudley) — Baby Reference V1 review
had not heard a better preampStereophile (Art Dudley) — Baby Reference V1 review
9 lost · Anchored, Artisan, Characterful, PRaT, Reference, Romantic, Silent Path
Against the Anchored brief, the Audiolab 9000Q keeps the slot clearly.
With the Musical Fidelity M8x Vinyl, the pairing gives up most on quietness at rest.
On its own merits the Sugden Sapphire DAP-800 is the weaker preamplifier for that brief.
It sits well above the share of the budget this brief aims at the preamplifier position.
S/N exceeding 112dB A-weighted, THD <0.002%Audiolab 9000P/Q HomeTheaterReview specs + Audio Tailor review
9 lost · Anchored, Artisan, Cavity-Native, Characterful, Intimate, PRaT, Reference, Romantic, Silent Path
Against the Anchored brief, the NVA P50 MKII keeps the slot clearly.
With the Audiolab 9000P, the pairing gives up most on quietness at rest.
With the Rega Aria Mk3 MM/MC, the pairing gives up most on quietness at rest.
On its own merits the Sugden Sapphire DAP-800 is the stronger preamplifier — but it loses here on fit: the pairing with the Audiolab 9000P gives up quietness at rest under the Anchored weighting.
8 lost · Anchored, Artisan, Cavity-Native, Intimate, PRaT, Reference
Against the Anchored brief, the NVA P50SA MKII keeps the slot clearly.
With the Longdog Audio P6100M (pair), the pairing gives up most on quietness at rest.
With the Rega Aria Mk3 MM/MC, the pairing gives up most on quietness at rest.
On its own merits the Sugden Sapphire DAP-800 is the stronger preamplifier — but it loses here on fit: the pairing with the Longdog Audio P6100M (pair) gives up quietness at rest under the Anchored weighting.
pin sharp clarityNVA owner consensus (P50SA)
pin sharp clarityNVA owner consensus (P50SA)
4 lost · Cavity-Native, Characterful, Romantic
Against the Cavity-Native brief, the Leema Neutron keeps the slot decisively.
With the Leema Hydra II, the pairing gives up most on vocal presence.
With the Rega Aura Reference MC, the pairing gives up most on quietness at rest.
On its own merits the Sugden Sapphire DAP-800 is the stronger preamplifier — but it loses here on fit: the pairing with the Leema Hydra II gives up vocal presence under the Cavity-Native weighting.
2 lost · Intimate
Against the Intimate brief, the EAR Yoshino 868L (Line) keeps the slot decisively.
With the EAR Yoshino 890, the pairing gives up most on midrange truth.
With the Rega Aura Reference MC, the pairing gives up most on low-level clarity.
On its own merits the Sugden Sapphire DAP-800 is the weaker preamplifier for that brief.
tonal balance constant... output levelHi-Fi+ (Sircom) 2018
2 lost · Artisan, Reference
Against the Artisan brief, the Exposure 3510 Preamplifier keeps the slot clearly.
With the Exposure XM9 Biamp 2x2 (4 units), the pairing gives up most on vocal presence.
On its own merits the Sugden Sapphire DAP-800 is the stronger preamplifier — but it loses here on fit: the pairing with the Exposure XM9 Biamp 2x2 (4 units) gives up vocal presence under the Artisan weighting.
It sits well above the share of the budget this brief aims at the preamplifier position.
1 lost · Intimate
Against the Intimate brief, the Audio Note M2 Phono keeps the slot clearly.
With the Audio Note P1 SE, the pairing gives up most on midrange truth.
On its own merits the Sugden Sapphire DAP-800 is the stronger preamplifier — but it loses here on fit: the pairing with the Audio Note P1 SE gives up midrange truth under the Intimate weighting.
It sits well above the share of the budget this brief aims at the preamplifier position.
tonal balance constant... output levelHi-Fi+ (Sircom) 2018