PrimaLuna
PrimaLuna EVO 400 Tube Power Amplifier | The Grid HiFi
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PrimaLuna EVO 400 Tube Power Amplifier | The Grid HiFi
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Shipping Information
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Customer Support
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FAQ’s
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Overview
PrimaLuna EVO 400 Tube Power Amplifier
70 watts per channel. Eight EL34 tubes. Stereo today, monoblocks tomorrow.
The PrimaLuna EVO 400 is a versatile high-end tube power amplifier built for listeners who want the character of EL34 amplification without sacrificing flexibility. It delivers 70 watts per channel in ultra-linear mode or 38 watts per channel in triode mode, with switching available from the supplied remote.
For systems that demand more power, the EVO 400 converts to monoblock operation, delivering 140 watts in ultra-linear mode. PrimaLuna's Adaptive AutoBias, custom-wound transformers, and point-to-point wiring complete an amplifier designed for serious two-channel listening.
Highlights
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Stereo or monoblock: 70W × 2 in stereo or 140W in mono, ultra-linear mode.
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Two sonic options: Remote-controlled triode and ultra-linear switching.
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Adaptive AutoBias: Automatically monitors and adjusts output tube bias.
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Tube protection: Bad Tube Indicator identifies a failed tube and activates protection.
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Premium construction: Custom output transformers, toroidal power transformer, point-to-point wiring, and Takman resistors.
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Flexible connectivity: Stereo RCA and XLR inputs.
Technical Specifications
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Specification |
PrimaLuna EVO 400 |
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Type |
Vacuum tube power amplifier |
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Stereo power, ultra-linear |
70W × 2 |
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Stereo power, triode |
38W × 2 |
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Mono power, ultra-linear |
140W |
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Mono power, triode |
82W |
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Power rating conditions |
EL34 tubes, 8Ω, 1% THD |
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Inputs |
1 stereo RCA, 1 stereo XLR |
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Speaker outputs, stereo |
4Ω, 8Ω, 16Ω |
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Speaker outputs, mono |
2Ω, 4Ω, 8Ω |
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Frequency response |
9Hz–60kHz ±1dB |
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Signal-to-noise ratio |
95dB / 105dBA |
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Standard tubes |
8 × EL34, 6 × 12AU7 |
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Dimensions (W × H × D) |
15.2 × 8 × 15.9 in. |
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Weight |
68.2 lb |
Build Your System with The Grid
Pair the EVO 400 with a quality preamplifier and loudspeakers selected for your room and listening preferences. The Grid HiFi can help with component matching, tube selection, and complete two-channel system design.
FAQs
Please read our FAQs page to find out more.
Do you price match?
Yes. We match any authorised dealer, including big-box retailers. If you find the same product at a lower price, contact us and we'll match it.
Do you offer free shipping?
Yes — free shipping on every order, with 2-day delivery available on most products. Easy returns and exchanges are included.
Where is your showroom?
We're at 6362 Alder Drive, Houston, Texas. The showroom lets you hear and compare reference-level systems in person before making any decisions. If you're considering a larger purchase or installation, it's well worth the visit.
Can I buy online without visiting the showroom?
Yes. The full product range is available through the online store with free nationwide shipping. For more complex system builds, speaking with one of our advisers first tends to lead to a better result.
Do you offer financing?
Yes. Special financing is available through the BrandSource Credit Card for qualifying purchases, allowing you to spread payments over time with no annual fee. Promotional rebate savings are also available periodically. See the financing page for full details.
Do you install systems as well as sell equipment?
Yes — installation is central to what we do. We design and install whole-home audio and video, home theaters, media rooms, outdoor audio, lighting and motorised shades, and full smart home automation.
Do you provide support after installation?
Yes. We provide ongoing service and support to ensure systems continue performing as intended — not just on installation day, but over the long term.