The Amber Z-Cap is Jantzen Audio’s most exclusive and refined capacitor — designed with pure copper foil, not metallized film — for ultra-high-end crossover applications. It delivers exceptional clarity, texture, and realism, especially in tweeter and midrange sections of top-tier loudspeaker designs.

🔧 Specifications:

Capacitance Range: 1.00 – 8.20 µF
Tolerance: ±5%
Voltage Rating: 200 VDC
Dielectric: Paper-in-oil hybrid with polypropylene support
Conductor: Pure copper foil (not metallized)
Leads: Solid copper wire
Build Type: Hand-assembled, wax-encapsulated, ultra-low inductance design
Loss Factor / ESR: Extremely low — best-in-class for copper foil types

🎧 Sound Profile:

Ultra-transparent, refined, and holographic
Extremely detailed with rich harmonic structure
Wide, deep soundstage with natural decay and air
Slightly warm and organic tone — not sterile or clinical

✅ Best For:

Tweeter and midrange circuits in ultra-high-end 2-way and 3-way systems
Vocal and acoustic instruments, where nuance and realism matter most
Upgrading boutique speakers (e.g., tube-based, high-efficiency designs)

PRODUCT FEATURES

The Amber Z-Cap is a super high-end pure copper foil capacitor, designed specifically for passive crossovers.

They are primarily used for the tweeter section of crossovers but work equally well for mid-range section application.

The Amber Z-Cap builds on the same design principles of our already critically acclaimed Alumen Z-Caps.

The differences between the two are subtle, but to the connoisseur listener, the listening experience will still be a clear improvement in the overall tonal balance.

Copper foil simply has a different sonic “flavor” compared to aluminum foil.

The “flavor” of copper foil is best described as an even more neutral/natural depiction of vocals and instruments.

This is paired with the enhancements in transparency and detail richness on an even higher level compared metalized polypropylene capacitors (MKP / Super MKP capacitors).

Due to the max. 200 volts DC voltage rating, we advise customers to be mindful when using Amber Z-Caps for tube/valve and power amplifier application.

For upgrading the coupling capacitors in amplifiers, we instead recommend choosing our Superior or Silver Z-Caps capacitors.

KEY INNOVATIONS

• An extremely fast reacting capacitor

• Ultra-thin dielectric insulation to eliminate memory effect in the capacitor

• Extremely low ESR, SEL, inductance and dielectric absorption data

• High quality pure copper foil wound with highly specialized machinery and precision winding techniques

• The center of the capacitor is enforced by small steel balls to further ensure stability and shape of the capacitor

• The specialized winding technique and overall quality of this capacitor enables us to offer a high-end product with a lot less distortion compared to the market standard

• Specifically designed for the tweeter and mid-range section of passive crossovers

• Can also be used as coupling capacitors for transistor amplifiers

TECHNICAL DATA

Type: Non polarized pure copper foil capacitor

Dielectric: Polypropylene film

Construction: Four-layer round tubular type axial leads

Winding: Pure solid copper foil spliced to polypropylene insulation film

Voltage Rating: 200VDC / 160VAC

Test Voltage: 150% rated voltage

Electrodes: Pure copper foil

Contacts: Non-inductive zinc thermally sprayed extended film

Coating: Bronze plastic tape wrapped black resin, sealed in a copper colored anodized aluminum tube

Leads: Tin plated oxygen free pure copper

Capacitance Range: 200VDC from 1.0 μF to 8.2μF

Capacitance tolerance: ±5% (on nominal value)

Dielectric constant: Non-polar dielectric

Dissipation factor: Extremely low

Dielectric absorption factor: ＜0.5% @20℃

Dielectric thickness: PB=5μm

Equivalent series resistance: Extremely low

Self-inductance: 0 nH

Insulation resistance: ＞100.000 MΩ@20℃

Temperature coefficient: -200℃x10-6/℃

Temperature Range: -55℃to +85℃

Metal layer thickness: PB=0.3μm

Metal layer conductivity: PB =1.2 Ω/cm2

⚖️ Compared to Other Jantzen Capacitors:

Feature	Amber Z-Cap	Silver Z-Cap	Superior Z-Cap	Alumen Z-Cap
Conductor	Pure copper foil	Metallized polypropylene	Metallized polypropylene	Metallized polypropylene
Dielectric	Hybrid / oil-based	Dry polypropylene	Dry polypropylene	Voiced for musical tone
Voltage Rating	200 VDC	800–1200 VDC	800–1200 VDC	800 VDC
Clarity & Texture	Highest	Ultra-clear, neutral	Open, dynamic	Warm, smooth
Price Level	$$$$$	$$$$	$$$	$$$
Use Case	Reference-grade systems	High-end audiophile builds	High-resolution crossovers	Natural tone/vocals

💡 Bottom Line:

The Amber Z-Cap is not for casual DIYers — it’s a no-compromise capacitor built for ultimate sonic purity in the most demanding speaker designs. If you’re after the most lifelike presentation of music, especially in the high-frequency range, this is Jantzen’s absolute top-tier offering.

Amber Z-Cap

Jantzen Audio Amber Z-Cap 1,00 – 10,00 µF +/- 5% 200 VDC Pure Copper Foil Capacitor

Jantzen Audio Amber Z-Cap 0,010 – 0,47 µF +/- 5% 630V VDC Pure Copper Foil Capacitor