PrimaLuna
PrimaLuna DiaLogue Seven power amplifier
Best monoblock amplifier for audiophiles seeking versatile, high-fidelity tube sound.
Experience exceptional audio with the PrimaLuna DiaLogue Seven, a monophonic tube power amplifier renowned for its meticulous hand-wiring and robust European circuit design. This amplifier features the innovative Adaptive AutoBias circuit, which continuously optimizes tube performance for reduced distortion and extended tube life. Effortlessly switch between 40Wpc triode and 70Wpc ultralinear modes via remote control, supported by dual output transformers per channel. Its superior build quality and flexible loudspeaker connections deliver a truly refined listening experience.
$5495.00
Owner Satisfaction
4.7
/ 5
Category Rank
451
/ 2758
#451 in Power Amplifiers
Price vs Category Average
-40%
Below average
Who it's for
- Owners prioritizing long-term reliability and premium internal construction
- Audiophiles who enjoy experimenting with different tube types
- Listeners seeking a rich, musical, and fatigue-free sound
Who should skip it
- Budget-conscious buyers wary of recurring maintenance expenses
- Users with limited ventilation or cramped equipment racks
- Listeners with restricted shelf space or physical lifting limitations
Performance breakdown
Sonic Versatility
Seamless switching between triode and ultralinear modes offers immense tonal flexibility.
Tube Maintenance
Adaptive AutoBias technology eliminates the headache of manual tube biasing.
Build Integrity
Meticulous hand-wiring ensures long-term reliability and exceptional internal signal purity.
Speaker Compatibility
Dedicated 2, 4, and 8-ohm taps accommodate a wide range of speakers.
Operational Convenience
Remote-controlled mode switching brings modern ease to a classic tube design.
Power Delivery
Robust solid-state rectification provides stable, punchy dynamics for demanding musical passages.
Key Specs
Monophonic tubed amplifier
Output Power
70Wpc in ultralinear mode, 40Wpc in triode mode
Output tubes
KT88 pentode tubes
Input impedance
100k ohm
Loudspeaker connections
2, 4, and 8-ohm secondaries
Shipping weight
71 lbs per channel
Power supply
Solid-state rectification and pi filter
Input/driver section
12AX7 and 12AU7 tubes
Know before you buy
The Adaptive AutoBias circuit continuously monitors and adjusts the bias of your tubes in real-time. This ensures optimal performance, reduces distortion, and significantly extends the lifespan of your tubes by eliminating the need for manual adjustments.
Yes, you can toggle between the two modes using the included remote control. This allows you to instantly compare the warmer, more intimate sound of Triode mode against the punchier, more powerful Ultralinear mode without leaving your seat.
The DiaLogue Seven features dedicated 2, 4, and 8-ohm output taps on the back panel. You should connect your speakers to the tap that most closely matches their nominal impedance to ensure the best power transfer and sonic performance.
The DiaLogue Seven is a monophonic power amplifier, meaning it is designed to drive a single channel. To create a stereo system, you will need to purchase two units.
Because of the Adaptive AutoBias system, you do not need to worry about the complex biasing procedures typical of many tube amps. You will simply need to replace the tubes when they reach the end of their service life, which the amplifier helps maximize.
The DiaLogue Seven uses standard RCA inputs with a 100k ohm input impedance, making it compatible with the vast majority of high-quality preamplifiers on the market. As long as your preamp has RCA outputs, it will integrate seamlessly.
Still have a question?
Ask Hayley anything about this product before you decide.