# Audio Precision APx515 Audio Analyzer (Pre-Owned) # Audio Precision APx515 Audio Analyzer (Pre-Owned) ## Key Features At A Glance - Typical THD+N of -106 dB at 1 kHz, 2.0 V (residual THD+N specified as -102 dB + 1.4 μV in 20 kHz BW) - Comprehensive audio test sequence executable in approximately 3 seconds without coding - Two analog input/output channels plus 192 kHz digital I/O standard - Maximum FFT length of 1024K points for detailed spectral analysis - Sine generator frequency range from 2 Hz to 80.1 kHz with 3 ppm frequency accuracy - Maximum balanced output amplitude of 16.00 Vrms with ±0.05 dB amplitude accuracy - Optional software extends capability: SW-HST (high-speed multitone), SW-AML (IMD/MOL/dynamic range/FFTs), SW-ACR (acoustic response), SW-ASIO (PC audio interface connectivity) - Programmable via VB.NET, C#.NET, and a full LabVIEW driver for automated production lines The Audio Precision APx515 is a two-channel audio analyzer designed specifically for production test environments where speed, repeatability, and ease-of-use are the deciding factors. The instrument provides two analog inputs, two analog outputs, and 192 kHz digital I/O in a compact chassis weighing only 4 kg, and according to its datasheet, it can execute a comprehensive sequence of common audio measurements in under three seconds. The APx515 shares its software environment with the broader APx Series, which means test projects authored on one APx instrument run natively on another — supporting collaboration between R&D, contract manufacturers, and production facilities working on the same product. The datasheet identifies production audio test as the primary application: stand-alone operation on a production bench, controlled by a keyboard, foot controller, or barcode scanner; or fully automated operation under control of a master .NET or LabVIEW application using the APx API or LabVIEW driver. The datasheet also describes a collaboration workflow where a test designer using a higher-tier APx525 can create a production test sequence and email it to a contract manufacturer whose APx515 runs the project natively — and where the APx515 operator can save a recording of the actual device output and return it as part of a single project file back to engineering for further analysis. Additional listed applications, available through software options, include IMD, MOL, dynamic range, and FFT measurements (SW-AML) and acoustic response measurements (SW-ACR). ValueTronics International stocks, tests, and ships audio analysis instruments from our 20,000 square foot secure warehouse at 1675 Cambridge Drive in Elgin, Illinois. Audio analyzers are precision instruments, and the way they are stored, handled, and verified before shipment directly affects what arrives on the customer's bench. Our in-house technical team works hands-on with this category, which is why our condition reports describe what was actually measured rather than what a previous owner believed about the unit. ## Brand Heritage Audio Precision has operated as a privately held audio test and measurement specialist since 1984, headquartered in Beaverton, Oregon. The company has retained its independent identity and brand throughout, focusing exclusively on audio analysis instruments rather than being absorbed into a broader test and measurement portfolio. ## Product Core & Specifications Category Specification Value System Performance Residual THD+N (20 kHz BW) \-102 dB + 1.4 µV; Typical <-106 dB (1 kHz, 2.0 V) Generator Performance Sine Frequency Range 2 Hz to 80.1 kHz Generator Performance Frequency Accuracy 3 ppm Generator Performance IMD Test Signals SMPTE, MOD, DFD Generator Performance Maximum Amplitude (balanced) 16.00 Vrms Generator Performance Amplitude Accuracy ±0.05 dB Generator Performance Flatness (5 Hz–20 kHz) ±0.010 dB Generator Performance Analog Output Configurations unbalanced, balanced, common mode Generator Performance Digital Output Sampling Rate 22 kHz–192 kHz Generator Performance Dolby / DTS Generator Yes Analyzer Performance Maximum Rated Input Voltage 125 Vpk Analyzer Performance Maximum Bandwidth \>90 kHz Analyzer Performance IMD Measurement Capability SMPTE, MOD, DFD Analyzer Performance Amplitude Accuracy (1 kHz) ±0.05 dB Analyzer Performance Amplitude Flatness (10 Hz–20 kHz) ±0.010 dB Analyzer Performance Residual Input Noise (20 kHz BW) 1.4 µV Analyzer Performance Individual Harmonic Analyzer d2–d10 Analyzer Performance Max FFT Length 1024K points Analyzer Performance DC Voltage Measurement Yes Calibration Accreditation ISO/IEC:17025 Accredited by A2LA **Important:** Maximum rated input voltage: 125 Vpk. Maximum balanced generator output: 16.00 Vrms. **Important:** All new instruments include an ISO/IEC:17025 Accredited Calibration report and test data, accredited by A2LA. **Important:** All new instruments are covered by a three-year warranty. ## About this used unit - Warranty included - Functional verification included - Standard Calibration Upgrade Options: No Calibration Required, NIST Traceable, Z540.1 or ISO 17025 with Data, Z540.3 Guardbanding with Data. - Note that unnecessary accessories may not be included (contact Test Architect to confirm). **Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.** ## Details - **Price:** 0.0 USD - **Vendor:** Audio Precision - **Type:** Audio Analyzer - **Tags:** Analyzers, Audio, Audio Precision, Manufacturers, product_manual_group_3, Product_used ## Variants | Variant | Price | Available | |---------|-------|-----------| | None | 0.00 USD | In stock | | NIST Traceable | 0.00 USD | In stock | | NIST Traceable with Full Data | 0.00 USD | In stock | | ISO IEC 17025 Accredited | 0.00 USD | In stock | ## Images - APX515 Audio Precision Audio Analyzer --- > Source: [ValueTronics](https://valuetronics.com/products/apx515-audio-precision-audio-analyzer-used) > Updated: 2026-05-28