Phoenix Gold ZDA4.8 amplifier

DSP amplifier ZDA4.8 redefines car sound quality in this price category, far surpassing standard factory amplifiers. Unlike the typical Class D technology used in similar products, the ZDA4.8 uses Class A/B technology to deliver a warmer, more natural sound that brings music to life. Even without DSP adjustments, sound quality is significantly improved. However, the built-in DSP processor allows you to go one step further - enabling you to fine-tune your vehicle's audio system to your individual preferences, regardless of your musical taste.

Hardware specification:

Product: ZDA4.8
Type: DSP amplifier
Amplifier class: A/B
Number of amplified channels: 4
Number of DSP channels: 8
Frequency response (-3dB): 15 Hz ~ 23 kHz
Maximum power: 560 W
RMS power (2Ω): N/D
RMS power (4Ω): 4 × 70 W
RCA output voltage: 4 V
DAC: Burr Brown PCM1681
DSP resolution: 24-bit
Sampling frequency: 48 kHz
Signal-to-noise ratio (analogue/digital input): -90 dB
THD (harmonic distortion): 0,1%
Inter-channel crosstalk: -60 dB
Damping factor: 120
High-Level input: Yes
Automatic switch-on: Yes
Input sensitivity (High-Level): 0.2 V - 20 V
Input sensitivity (Low-Level): 0.2 V - 5 V
Operating voltage: 9 V - 16 V
Compatibility with start-stop system: Yes
Current consumption at rest: 1,5 A
Maximum current consumption: 30 A
Total efficiency (4Ω): 60%
Power connector: 10 mm²
Remote control (optional): ZDAWCT
Low-level outputs (RCA): 8
Analogue inputs: 6 × High-Level / 2 × Low-Level
Digital inputs: Bluetooth / Coaxial / USB / SPDIF
Remote Input: Yes
Remote Output: Yes
Connector for computer connection: USB-B
App control (coming soon): Yes

Software specifications

Product: ZDA4.8 / ZDA6.8 / ZDA8.8
PC software: Yes (Windows 10, Windows 11)
Mobile application: Yes (available soon)
Equalizer: 31-band
Phase control: 0° or 180°
Filters: High-Pass and Low-Pass
Filter types: Bessel, Butterworth, Linkwitz-Riley
Filter gradients (Bessel/Butterworth): Off, -6 dB, -12 dB, -18 dB, -24 dB, -36 dB, -42 dB, -48 dB
Filter gradients (Linkwitz-Riley): Off, -12 dB, -24 dB, -48 dB
Time Alignment: 0 - 48 ms (0 - 1632 cm)
Skip EQ (Bypass): Yes (for individual and all channels)
Mute: Yes (for individual and all channels)
Input priority: Yes (2 sources)
Start-up delay: Yes (5 - 30 sec.)
Custom signal routing: Yes
EQ settings: Graphic equalizer / Parametric equalizer
Delay calculator: Yes (in cm and inches)
Delay unit: Centimetres / Inches / Milliseconds
Linkage settings: Copying and linking (delay / EQ / filters / volume)
Input settings (sensitivity): -6 dB, -3 dB, 0 dB, +3 dB, +6 dB
Password protection for presets: Yes
Full screen mode: Yes
EQ bandwidth gain: Each band: -12 dB to +12 dB
Q-value adjustment: From 0.1 to 12
Languages: English, German, Spanish, Chinese
EQ frequency adjustment range: 20 Hz - 20 kHz
Individual channel reinforcement: 0 dB to -59 dB
Global volume gain: 0 dB to -28 dB
Channel names: Possibility to assign names to each channel

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OIS - Impedance simulation OEM

The ZDA4.8 is equipped with a function OIS (OEM Impedance Simulation), which ensures full compatibility with today's head units and amplifiers. By simulating the impedance of the speakers, the functionality of the vehicle's factory head unit is retained, eliminating potential problems with plug-and-play installations.

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Priority Input

Function Priority Input guarantees seamless integration into the vehicle's factory head unit. You can use low-level inputs or digital sources, such as Bluetooth, optical or coaxial input, without losing important system sounds - such as parking sensors, alerts or radio signals. For example, if your vehicle has a bass-limiting high-pass filter, you can bypass this limitation by sending audio directly to the DSP via Bluetooth, while retaining full OEM functionality.

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DSP outputs

The ZDA4.8 not only improves your system - it also allows you to expand it. Four DSP-configurable RCA outputs (channels 5-8) allow you to connect additional amplifiers, e.g. for a subwoofer, and optimise them fully with the DSP software. Delay settings, filters and equalization options ensure top performance also for additional components.

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Software

Take control of your audio system with free, intuitive PC software (compatible with Windows 10 and 11). Connect via the included USB-B cable and access advanced tuning tools:

• 31-band parametric equalizer (PEQ) for precise frequency adjustment

• Selectable filter types (Bessel, Butterworth, Linkwitz-Riley) with steepness from -6 dB to -48 dB

• Time alignment with built-in delay calculator

• Fully configurable channel routing

• Channel linking options (Copy or Link)

With these advanced features, you can tailor the audio system exactly to your needs.

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Key Features:

Every detail of the ZDA series amplifiers has been designed with excellence in mind:

• Burr Brown OPs - Same renowned technology as the ZQ series for the ultimate in sound precision

• Burr PCM1681 DAC - Premium digital-to-analogue conversion for crystal-clear sound

• Bluetooth 5.0 - Stable and modern wireless connection

• Toshiba TDA transistor package - The ideal combination of power and efficiency

• Cast aluminium as heat sink - Advanced cooling for maximum performance

• DSP sampling frequency 48 kHz - Guarantee of unparalleled purity and processing accuracy

• Gold-plated PCB design - Proof of reliability and durability by Phoenix Gold

• Molex connectors - Secure connections for trouble-free installation

• 8-channel DSP (on all models) - Unlimited personalisation options

• Class A/B technology - Natural, clear sound without the use of noisy fans