Nagra
Nagra PSA Pyramid Stereo Amplifier
Best high-end amplifier for design-conscious audiophiles seeking precise, neutral sound.
The Nagra PSA is a striking stereo power amplifier that combines exceptional sonic performance with an iconic, sculptural design. Engineered for audiophiles, it delivers 100W per channel of precise, neutral sound reproduction, ideal for driving demanding speakers. Manufactured in Switzerland, its legendary build quality ensures lasting performance. This amplifier is a sophisticated choice for those who appreciate both advanced audio engineering and a unique aesthetic statement in their listening space.
$6595.00
Owner Satisfaction
4.8
/ 5
Category Rank
37
/ 1719
#37 in Power Amplifiers
Price vs Category Average
-20%
Below average
Power Output
100
/ watts per channel
Who it's for
- Serious collectors prioritizing long-term professional-grade reliability
- Audiophiles seeking absolute sonic purity and recording transparency
- Design enthusiasts valuing space-saving, high-precision industrial aesthetics
Who should skip it
- Budget-conscious listeners seeking high-end performance without the luxury markup
- Owners of power-hungry speakers requiring high-current amplification
- Users preferring standard chassis layouts for easy cable management
Performance breakdown
Sonic Neutrality
Delivers an exceptionally transparent sound profile for critical listening sessions.
Build Integrity
Swiss-made precision ensures long-term reliability and structural excellence.
Aesthetic Impact
The iconic pyramid silhouette serves as a bold, sculptural centerpiece.
Drive Capability
Handles demanding speaker loads with effortless power and dynamic control.
Connectivity Flexibility
Balanced XLR inputs offer professional standards with helpful RCA adapter support.
System Integration
Selectable sensitivity jumpers allow for seamless matching with various preamplifiers.
Key Specs
Power Output
100 watts per channel
Dimensions
15” x 15” base, 10” high
Weight
35 pounds
Inputs
Single pair of balanced XLR connectors
Speaker Terminals
WBT binding posts
Input Sensitivity
Selectable 1V or 2V settings
Amplifier Type
Class AB
Power Draw
500 watts at full output
Features
- Iconic pyramid-shaped industrial design
- Delivers precise and dynamic sound
- Tonally accurate for system tuning
- High-quality balanced XLR inputs
- Premium WBT binding posts
- Selectable input sensitivity jumpers
- Includes RCA adaptors for flexibility
- Subtle LED indicators for status
What customers say
The Nagra PSA Pyramid Amplifier earns high praise for its exceptional sonic performance and distinctive industrial design. Users consistently describe the sound as transparent, musical, and effortless, noting its ability to reveal fine recording details across a deep, expansive soundstage without listener fatigue. The compact pyramid form factor and signature Swiss build quality underscore its luxury and perceived reliability. While the performance is universally lauded, the substantial price point is the main consideration for potential buyers. Enthusiasts, however, view this investment as essential for achieving reference level fidelity, confirming deep satisfaction with this centerpiece component.
Know before you buy
The amplifier is designed with balanced XLR inputs to minimize noise and interference. While it performs best with a balanced connection, it includes RCA adaptors if you are using a source with single-ended outputs.
The amplifier features internal jumpers that allow you to toggle between 1V and 2V input sensitivity. This flexibility helps you match the amplifier's gain to your specific preamplifier and source components.
The PSA delivers 100 watts per channel in Class AB, which is generally sufficient for most high-quality bookshelf and floorstanding speakers. Its robust design is engineered to handle demanding loads, though you should verify your speakers' sensitivity and impedance requirements.
The high-quality WBT binding posts are designed to accommodate a variety of terminations, including spade lugs and banana plugs. These connectors are industry-standard for their secure contact and signal integrity.
The 15-inch by 15-inch base requires a stable, flat surface with adequate clearance for ventilation. Because of its unique shape and weight of 35 pounds, ensure your rack or stand can support the footprint and allow for proper airflow around the chassis.
The LED indicators are designed to be subtle and unobtrusive. They provide clear status information without creating excessive glare, making the unit suitable for dedicated listening rooms where lighting is kept low.
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