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JCALLY JM98 MAX

JCALLY JM98 MAX

High-end Portable Headphone Amplifier

  • 8-core silver-copper 448 coil with spiral design.
  • Patented design
  • Type-C interface device
  • Aluminum alloy with five-axis CNC surface carving and anodized matte silver finish.
  • Compatible with: Android/iOS devices (phones, tablets) with a Type-C interface. MacOS/Windows 10 (or higher) computers supporting the UAC 2.0 communication protocol. Devices using UAC 1.0, such as the Switch, PS5 console, and Windows 7 computers, are not supported.
    Cable material
COLOR: C to 3.5mm
Regular price $45.00 USD
Regular price $50.00 USD Sale price $45.00 USD
Sale Sold out
Shipping calculated at checkout.
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Enjoy free shipping to most countries Shipping FAQs

Global Shipping
Shipping FAQs
Which countries do you ship to?
We typically ship to most countries via express delivery, and to many countries via standard delivery. You can confirm with our team whether standard delivery is available in your country.

We cannot ship to PO Boxes or APO/FPO addresses.

*Note: Generally, we only offer designated delivery to India and Russia. We only offer express delivery to countries in Africa, Argentina, Hawaii, Kuwait, Mauritius, Montenegro, and Sri Lanka.

Due to unpredictable factors such as pandemics and wars, delivery times may be adjusted.

How much does shipping cost?
We offer two shipping options: standard delivery and express delivery.

Standard delivery is free to most countries, while express delivery costs between $15 and $50, depending on your country. If your order is over $270, express delivery is free*.

*This applies to most countries. However, large items (such as headphones and desktop DACs/AMPs) are not eligible for free shipping. For large items, free shipping is only available for orders over $499.99 USD.

Shipping costs do not include import taxes or handling fees that may apply in your country. Audione is not responsible for these charges. If you refuse to pay taxes/duties, shipping costs will still be deducted from the round-trip shipping fee you paid. Due to taxes and other miscellaneous fees, shipping costs may be higher than the amount shown on your order.

Some packages marked "Return to Seller" may be destroyed by postal or customs officials if the buyer refuses to accept the package or fails to pay taxes. No refund will be given in such cases.

For some countries, standard shipping via Yanwen Express includes taxes. However, Audione is not responsible for any additional administrative fees or handling charges imposed by your local courier or customs. Please confirm with your local customs office.

Express shipping to certain remote areas may incur additional charges. We will contact you if additional payment is required.

If you have any questions about shipping, please contact us before placing your order.

How long does it take to receive your order after placing it?
For in-stock items, your order will be shipped within 3 business days. You can check the stock status of any item with our staff.

Custom items may take longer. Please contact our staff for more information.

On normal, non-promotional days, after your package is shipped:

With standard shipping, your item will take approximately 2-4 weeks to arrive after it is shipped. For some countries, it may take up to 2-3 months, depending on your country, customs, and other factors. *Shipping times are beyond our control. Audione will not issue refunds. Please consider upgrading to an express delivery service or allow for the waiting time.
After shipping with an express delivery service, your item will take approximately 3-7 days to arrive.
*Note: Holidays or other unforeseen circumstances may affect delivery times.

What if your package has been shipped but has not arrived?

First, contact your local courier with your local tracking number.
If your package has been in transit for at least three months, it may have been lost.
For orders under $50, you can choose a one-time reshipment or a full refund (cash payment) via PayPal/credit/debit card.
For orders over $50, we only process a 50% refund of the order amount for cash payments via PayPal/credit/debit card. If you have any questions about standard delivery, we recommend choosing DHL courier service.
If a package is undeliverable due to any of the following circumstances, the customer is responsible for the consequences and costs incurred:
The address or phone number provided by the recipient is incorrect; The courier is unable to contact the recipient; The recipient refuses to sign for the package; The package is lost or damaged due to the recipient selecting "No Signature"; The recipient refuses to pay local taxes/handling fees; The recipient refuses to provide customs clearance documents; Who is responsible for import taxes/duties?
The customer is responsible for any customs duties/import/handling fees that may be incurred on the package.

If you refuse to pay these fees and refuse to accept the package, you will still be responsible for the shipping charges. Audione will only refund your order amount after deducting round-trip shipping costs.

How can I get help with my order?
Order cancellations and/or modifications can only be processed manually by our staff, provided your order has not already been processed by our warehouse team.
Please place orders with caution, as our support team may not be available on weekdays or weekends.

30-DAY RETURN POLICY FOR FACTORY SEALED, NON-CUSTOMIZED PRODUCTS.

Warranty Policy

Warranty Definition

A warranty is our written commitment to repair or replace a product that is defective due to a manufacturing defect.

 

*In some cases, the warranty may not apply or may be limited in coverage. Please see the following section.

 

Warranty Period

Audione offers a one-year warranty on our products (excluding cases, earbuds, and other accessories). Audione offers a three-month warranty on cables and adapters. The warranty period begins on the date of purchase. If you encounter any issues, please email jiaomei_liu@audione.net.cn. If you do not receive a response to our email within three business days, please contact us through our website to inquire.

 

Non-original buyers must notify us to inquire about the warranty status of their purchase and whether a warranty claim is available. We require details such as the order number, the non-original buyer's personal contact information, and the shipping address.

 

For Audione's own brands, such as TANGZU, we can provide repair services even if the order number is not available, as long as the product is still repairable. However, this service does not apply to discontinued products. You are responsible for all shipping and repair costs. For products without an order number, expect longer repair times.

 

Defective Products

The Audione warranty covers any factory defects that may affect the normal functionality of your product. It does not cover damage caused by human error, negligence, or other factors (see below for more details).

 

If your product is defective, please follow the instructions below:

 

Send an email to jiaomei_liu@audione.net.cn with an appropriate subject line.

 

Include your order number and clearly describe your issue.

 

Attach photos and videos to prove your product is defective.

 

If the photos/videos provided are insufficient to prove the issue, we will conduct further inquiries.

 

Once we confirm that your product is defective due to a manufacturing defect, we will arrange a replacement, partial refund, or full refund, as applicable.

 

We may require you to return the defective product to Audione for a replacement.

 

Audione will only cover the shipping costs of a partially defective product within 7 days of receipt if you can verify the manufacturing defect with video/photos. We will only reship the defective product once we have received it. Audione does not cover shipping costs for customers who choose a full refund.

 

Items claimed to be defective after 7 days must be returned to Audione for inspection to detect any factory defects. Audione does not cover shipping costs. We only cover repair/replacement and return shipping costs (excluding any local taxes, importation, or processing fees that may apply).

 

*Note: Warranty procedures may vary depending on the product and the issue. If you encounter any issues, please contact jiaomei_liu@audione.net.cn immediately. If you do not receive an email response within 3 business days, please contact us via our website or Discord for verification. If your failure to contact customer service promptly results in a deterioration in the product's condition, your 1-year warranty may be limited or voided.

 

Wrong/Missing Items Upon Delivery

As a general rule, upon receiving a package, please verify the contents and ensure the packaging is intact before signing for it.

All customers must take an unboxing video of the entire sealed package from all angles, opening the package and the product. Failure to provide this video will invalidate any claims for wrong or missing items.

 

If you have any claims of incorrect/missing items, please email jiaomei_liu@audione.net.cn. Please provide the following details.

1) Email jiaomei_liu@audione.net.cn with an appropriate subject line.

2) Provide your order number and clearly describe the issue.

3) Attach photos of the sealed package and packaging, as well as an unboxing video, to prove your product is incorrect/missing. Shipping information must be clearly visible on the package.

 

Once the issue is confirmed, we will arrange a replacement or refund (as applicable). For items claimed to be missing from the package or sealed product, an unboxing video is required. For incorrect items, Audione will determine whether you need to return the incorrect item.

 

Warranty is not applicable in the following cases:

Product damage caused by accident, user negligence, disassembly, water damage, improper handling, mismanagement, abuse, improper installation, vandalism, or modification. The product was a prize or giveaway.

The product was not purchased from audione.store (for example, if you purchased from AliExpress, a crowdfunding campaign, Amazon, a local reseller, etc., please contact the store or reseller directly).

Products may wear out over time, including cosmetic changes such as color change.

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TOP-SELL UPGRADEDPOCKET-SIZED HI-FITREASURE

Dual chip luxury configuration
Massive power Enjoy HIFI
5-axis CNC precision hardware
Suitable for differentmodels"earphone
LOW SNR high output
448 coils luxury silver-plated wire

PATENT APPEARANCEDESIGN

ENTHUSIAST-GRADE SETUP:

HIGH-RESOLUTION AUDIO &POWERFUL DECODING

WIDELY COMPATIBLE:TYPE-C CONNECPORS DEVICE

PREMIUM MATERIALS:
PRECISION-MACHINED
ALUMINUM MABLASTED
AGDTZED FINISH

LUXURIOUS WIRE:
SILVER COOPER 8 CORE 448 COILS

DUAL-CHIP ARCHITECTURE REFERENCE-CLASS HI-FI PERFORMANCE

JM7MAX utilizes the Conexant Cx31993 DAC chip, supporting PCM sampling ratesup to 32-bit/384kHz. Powerfully equipped with the SGM8262 amplifier chip, itdelivers exceptional driving capability for high-resolution audio reproduction.Experience authoritative low-end response and enhanced vocal clarity. Forrecording, a high-definition ADC chip supports 24-bit/96kHz capture.Comprehensive functionalityincludes music playback, inline controls,voice calling, and live broadcasting

HIGH-PERFORMANCE CIRCUIT ARCHITECTUREPORTABLE DAC/AMP DRIVING FORCE ASSURANCE

CIRCUIT-SOUND SYNERGY: SUPERIOR PCB ENGINEERING DIRECTLYGOVERNS A PORTABLE DAC/AMP'S SONIC PERFORMANCE. JM7MAX'SHI-FI CIRCUITRY ENSURES PRECISION CLOCKING AND HIGH-CURRENTDRIVE, DELIVERING FLAGSHIP-GRADE DYNAMICS WITH FOCUSEDTRANSIENT RESPONSE.

JM7MAX COMPARE TO OTHER`S BRANDCORE COMPARISON TABLE

Superior SNR PerformancePristine Sonic Canvaswith Refined Micro-Detail

SNR (SIGNAL-TO-NOISE RATIO) MEASURES THE RATIO BETWEEN USEFUL AUDIOSIGNALS AND INHERENT DEVICE NOISE IN THE OUTPUT. THIS CRITICAL METRICDETERMINES A PORTABLE DAC/AMP'S BACKGROUND BLACKNESS AND DETAILRETRIEVAL CAPABILITY, HIGHER VALUES INDICATE GREATER USEFUL SIGNALDOMINANCE OVER NOISE, RESULTING IN: TRANSLUCENT BACKGROUND PURITY,ENHANCED MICRO-DYNAMIC ARTICULATION. TEXTURALLY NUANCED SOUNDREPRODUCTION.

Ultra-Low Noise Floor : Acoustic Cornerstoneof Pristine Aural Perception

NOISE FLOOR REFERS TO THE AGGREGATE SELF-NOISE GENERATED BY A DAC/AMPDURING OPERATION (UNDER NO-SIGNAL OR LOW-LEVELINPUT CONDITIONS),ENCOMPASSING: COMPONENT INHERENT NOISE (SEMICONDUCTOR SHOT/THERMAL NOISE). DESIGN-INDUCED NOISE (PCB LAYOUT IMPERFECTIONS)EXTERNALINTERFERENCE LEAKAGE. LOWER NOISE FLOOR DIRECTLYCORRELATES WITH SUPERIOR SONIC PURITY.

Superior THD+N PerformanceThe Benchmark Metric for SonicPurity & Signal Fidelity

THD+N (TOTAL HARMONIC DISTORTION PLUS NOISE) QUANTIFIES THE COMBINEDRATIO OF HARMONIC DISTORTION AND NOISE RELATIVE TO THE ORIGINAL SIGNALTHIS CRITICAL PARAMETER MEASURES A PORTABLE DAC/AMP'S RESOLUTIONACCURACY AND BACKDROP BLACKNESS. LOWER VALUES INDICATE REDUCEDSIGNAL CORRUPTION AND NOISE INTRUSION, DELIVERING PURER SOUNDREPRODUCTION AND HIGHER SIGNAL AUTHENTICITY.

Crosstalk suppression:The Fundamental Safeguard for ChannelIsolation & Spatial Layering

IDEALLY, LEFT AND RIGHT AUDIO CHANNELS SHOULD OPERATE INDEPENDENTLYWITHOUT MUTUAL INTERFERENCE. HOWEVER, CIRCUIT DESIGN CONSTRAINTSAND COMPONENT LAYOUT LIMITATIONS CAN CAUSE SIGNAL LEAKAGE BETWEENCHANNELS. CROSSTALK QUANTIFIES INTER-CHANNEL ISOLATION INTEGRITY -LOWER VALUES INDICATE: MINIMIZED CHANNEL INTERFERENCE. PRECISESOUNDSTAGE POSITIONING. DEFINED SPATIAL HIERARCHY.ENABLINGACCURATE INSTRUMENT LOCALIZATION AND LAYERED ACOUSTICIMAGING.

Dynamic Range (DR): Enabling SonicStratification & Authentic Reproduction

DYNAMIC RANGE MEASURES THE RATIO BETWEEN A PORTABLE DAC/AMP'SMAXIMUM UNDISTORTED OUTPUT AND ITS MINIMUM DISCERNIBLE SIGNAL LEVELGREATER DR EMPOWERS THE DEVICE TO: RESOLVE MICRO-DETAILS (E.G.INSTRUMENT HARMONICS, VOCAL BREATHS) WITH CLARITY. MAINTAINDISTORTION-FREE REPRODUCTION DURING MACRO-DYNAMICS (E.G. DRUMIMPACTS, CHORAL CLIMAXES). DELIVER NATURAL INTENSITY GRADATIONS,ACHIEVING UNALTERED STUDIO MASTER AUTHENTICITY.

Low-lmpedance OptimizationAmplification Prowess Fully Realized

OUTPUT IMPEDANCE UNDER 32Ω LOAD (I.E., THE INTERNAL CIRCUIT IMPEDANCEAT THE OUTPUT TERMINAL OF THE DONGLE DAC/AMP) IS A KEY METRIC FOREVALUATING HEADPHONE AMPLIFIER COMPATIBILITY.A LOWER VALUE (≤1QISCONSIDERED EXCELLENT INDUSTRY-WIDE) ENABLES BROADER HEADPHONECOMPATIBILITY AND MORE STABLE AUDIO PERFORMANCE. INDUSTRY STANDARDRECOMMENDATION: AMPLIFIER OUTPUT IMPEDANCE ≤ 1/8 OF HEADPHONEIMPEDANCE

SINAD: Signal-to-Noise and Distortion RatioThe Key to Pure Audio Output

SINAD is the ratio of the useful signal (a standard lkHz sine wave) tothe sum ofnoise (such as circuit noise floor) and distortion signals(such as harmonic distortion,intermodulation distortion, etc.). lt isa critical metric for assessing the purity ofthe output signal fromDAC dongles. The higher the SINAD value, the greater the proportionof the useful signal, and the less noise and distortion-resulting incleaner sound quality and higher fidelity.

SINAD: Signal-to-Noise and Distortion RatioThe Key to Pure Audio Output

OUTPUT POWER IS A CORE PARAMETER MEASURING THE DRIVING CAPABILITY OFA DAC DONGLE. IT REFERS TO THE EFFECTIVE OUTPUT POWER DELIVERED WHENDRIVING HEADPHONES OF DIFFERENT IMPEDANCES (SUCH AS 16Ω,320, OR 300Q)THIS METRIC DIRECTLY REFLECTS THE DONGLE'S DRIVE COMPATIBILITYWITHVARIOUS HEADPHONE IMPEDANCES, PROVIDING CRITICAL REFERENCE FORMATCHING EOUIPMENT WITH HEADPHONES.

WIDELY COMPATIBLEWITH MANY DEVICES

JM7MAX supports high sampling rate formats up to 32-bit/384kHz. it is compatiblewith:Android/i0s devices via Type-C ports (phones/tablets).MacOS/Windows 10(or later) computers supporting the UAC 2.0 communication protocol.lt is not compatible with devices using UAC 1.0, such as: Switch,PS5 consoles,windows 7 computers

PRODUCT SPECIFICATION

NAME VISUAL HIFI PORTABLE AMPLIFIER
MODE JM7MAX
MAIN CHIP CONEXANT CX31993
ОPAMPCHIP SGM8262
PCM RATE 32bits/384KHz ADC RATE 24bits/96KHz
SNR≈115dB(320,A-wt.) DNR≈103dB(32Ω)
CROSSTALK≈-76dB(32Ω)
THD-N≈0.0025%(32Ω) ≈0.0025%(300Ω)
NOISE LEVEL:3.5 PO≈2.5uV(32Ω, A-wt.)
OUTPUT IMPEDANCE ≈0.50(32Ω) OUTPUT POWER ≈228mW(16Ω/THD+N<1%) ≈118mW(32Ω/THD+N<1%) ≈13mW(300Ω/THD+N<1%)

APPLIANCEFUNCTIONSUPPORT

Plug and play support game、music、live streamingSUPPORTphone call、microphone、recording etc

APPLIANCE

Compatible with:Android/i0s devices via Type-C ports (phonesitablets). MacOS/Windows 10 (orlater) computers supporting theAPPLIANCEJAC 2.0 communication protocol,not compatible with devicesusing UAC 1.0, such as: Switch,PS5 consoles,windows 7 computer
WIRE MATERIAL
8 core silver cooper 448 coils, spiral design

SHELL METWEIGHT

Aluminum alloy five-axis CNC curved surface precision engraving anodized matte silver finish with 180-mesh fine sanding
COLOUR Matte silver

DIMENSION 115士10mm
GROSS WEIGHT 47g士5g

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