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Out of stock - Accepts Pre-Orders
Out of Stock - Allows Pre-Orders
Message us in discord or our website chat to find out pre-order time.
- Silver / Standard
- Silver / CIA Version
- Black / Standard
- Black / CIA Version
Allnic ASRA RHPA-7500
High-Power Headphone Amplifier
- Dual output architecture: 20W Pentode / 10W Triode mode
- Permalloy output transformers for minimal coloration and transient delay
- Dedicated drive circuit for RAAL ribbon headphones with Permalloy transformer
- Speaker binding posts for direct drive of high-efficiency speakers
- 41-step Constant Impedance Attenuator option for precise volume control
VAT and Duties Included for UK and Eligible EU Customers.
If you are outside the UK or EU, the price does not include any taxes. Local taxes and import duties will be extra. They will be raised by the local authorities and billed directly to the customer.
VAT and Import Taxes FAQ
Allnic ASRA RHPA-7500
A High-End Headphone Amplifier Designed Around Drive Capability
Allnic answers the most fundamental question in headphone amplifier design:
“Not how much output power is required, but how precisely the load is controlled.”
The RHPA-7500 moves beyond the conventional low-power assumptions of traditional headphone amplifiers. It is a drive-centric headphone amplifier engineered according to the same principles of current delivery, load control, and output structure used in speaker amplifiers.
Pentode · Triode Dual Output Architecture
The ASRA / RHPA-7500 adopts a dual output architecture, delivering 20W in Pentode mode and 10W in Triode mode.
In Pentode mode, the sound emphasizes energy, scale, and authoritative control.
In Triode mode, density, purity, and the refined tonal character unique to vacuum tubes come to the forefront.
Rather than focusing on output figures alone, the core design philosophy of the RHPA-7500 lies in allowing the listener to select the most appropriate drive mode to match the music and the headphones.
Permalloy Output Transformer
The output stage employs high-purity, nickel-based Permalloy output transformers. With its exceptionally high magnetic permeability and superior micro-signal responsiveness, Permalloy minimizes coloration and transient delay that commonly occur in conventional output transformers.
As a result, the RHPA-7500 achieves an openness and speed reminiscent of OTL designs, while simultaneously preserving the distinctive texture and tonal richness of vacuum tubes—despite utilizing a transformer-coupled output stage.
Dedicated Output for RAAL Ribbon Headphones
Ribbon headphones inherently require dedicated impedance matching and output design.
Rather than treating RAAL ribbon headphones as an exceptional or problematic load, the ASRA / RHPA-7500 formally integrates a dedicated drive circuit, including a dedicated Permalloy output transformer, specifically engineered for RAAL ribbon headphones.
This design allows ribbon headphones to be driven directly and stably without any external interface, delivering fast, transparent high frequencies and outstanding spatial resolution.
Versatility Beyond a Headphone Amplifier
In addition to 1/4-inch and 4-pin XLR headphone outputs, the RHPA-7500 is equipped with speaker binding posts, enabling it to directly drive small, high-efficiency speakers.
This amplifier transcends the traditional boundaries between a headphone amplifier and an integrated amplifier, offering an expanded playback platform.
(41-Step Constant Impedance Attenuator Option)
Precision Volume Control
The optional 41-step Constant Impedance Attenuator maintains consistent channel balance and tonal density regardless of volume level.
Even during fine volume adjustments, it provides precise control without compromising the sonic character.
Specifications
Tube Configuration
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ECF80 × 2 / 12AU7 (6211) × 2 / 7558 × 4
Power & Performance
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20W (Pentode) / 10W (Triode)
-
10Ω – 300Ω
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+28dB
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20Hz – 20kHz (±0dB)
Inputs & Outputs
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RCA × 3 / XLR × 1
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1/4" (6.35mm) × 1, 4-pin XLR × 1, RAAL Ribbon Dedicated 4-pin XLR
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1 Pair Binding Posts
Volume Control
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Precision Potentiometer (Option: 41-Step Constant Impedance Attenuator)
Physical Specifications
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35.5cm × 44.5cm × 14.0cm (14" × 17.5" × 5.5")
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16.3 Kg
Customer reviews
Shipping, returns & warranty
- Dispatch
- 1–3 business days In-stock items, Monday to Friday except bank holidays, subject to stock and security checks.
- Delivery
- Tracked or signed Delivery options and costs are shown at checkout. We don't profit from shipping charges.
- Returns
- 14 days For electronics such as DACs, amps and players, in like-new condition with all original packaging and accessories.
Good to know
- Return shipping is paid by the customer.
- Open box, B-stock, refurbished and clearance items can't be returned.
- Please add a valid phone number at checkout in case we need to verify your identity.
- New products
- 1-year manufacturer warranty Most products. The exact warranty is set by the manufacturer.
- Pre-owned & open box
- 3 months B-grade, open box, refurbished, ex-demo and second-hand items.
- Covered
- Defects in materials, parts and workmanship
- Not covered
- Accidents, misuse and unauthorised repairs Including abnormal conditions, deliberate abuse and operator error.
- Making a claim
- Send it to us, we ship it back free You cover shipping to Elise Audio; we pay to send the repaired or replacement product back.