{"format":"barcodepedia.product.v2","key":"00000888879644","url":"/product/000888879644/metric-halo-mobile-i-o-uln-2-2d-expanded-dsp-with-2-jensen-transformers","version":{"number":1,"recorded_at":"2026-09-25T02:54:04.589Z","author_type":"user_bot","bot_pass":"discover","change_note":"Added the Metric Halo Mobile I/O ULN-2 2d Expanded +DSP with 2 Jensen transformers (part 000-50006-2-JEN+DSP), a FireWire audio interface, from the wanted list. Identity from the Amazon.com listing B000CPJ2AM (prints UPC 000888879644) and UPCitemdb; specifications from Metric Halo's ULN-2 page, the Jensen option page and the 2004 Sound On Sound review; discontinued status from Metric Halo's current hardware range. New brand and company stubs for Metric Halo. Gaps: GS1 prefix holder unsettled (reseller-looking 0008888 block), no licensed photo, no current price, 2d-card and Jensen input specifications."},"product":{"schemaVersion":2,"identity":{"gtin":"00000888879644","name":"Metric Halo Mobile I/O ULN-2 2d Expanded +DSP with 2 Jensen Transformers","brand":"brand/metric-halo","status":"discontinued","summary":"One-rack-space FireWire audio interface and mic preamp/converter by Metric Halo, part number 000-50006-2-JEN+DSP, with Jensen input transformers and on-board DSP.","category":"category/10005726","last_seen":"2026-09-25","model_number":"000-50006-2-JEN+DSP","last_seen_note":"Amazon.com listing B000CPJ2AM still online under this barcode when read on 2026-09-25, with no offer price shown.","country_of_sale":["US"],"default_observation":"uln2-2d-2jen-dsp"},"selectedId":"uln2-base","observations":[{"id":"uln2-2d-2jen-dsp","label":"ULN-2 2d Expanded +DSP with two Jensen input transformers","kind":"edition","market":["US"],"language":null,"validFrom":null,"validUntil":null,"observed":"2026-09-25","status":"supported","source":"^amazon","note":"The configuration this barcode is listed for on Amazon.com and UPCitemdb.","legacy":false,"ingredientsText":null,"ingredientsDeclaration":null,"ingredientsExemptBasis":null,"ingredients":[],"panels":[],"specifications":[{"key":null,"mode":null,"note":"Model number and manufacturer part number on the Amazon.com listing.","unit":null,"state":"known","value":"000-50006-2-JEN+DSP","method":"printed","source":"^amazon","property":"Manufacturer part number","qualifier":null,"observation":"uln2-2d-2jen-dsp","numeric_value":null,"normalized_label":"Manufacturer part number"},{"key":null,"mode":null,"note":"Factory-installed option replacing the capacitor coupling of the input stage; 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the prefix length and holder are unsettled, so no gs1_prefix_owner row is written.","domain":"relationships","source":"https://www.buycott.com/upc/000888879644","observation":null},{"state":"disputed","detail":"The Amazon.com listing carries four UPCs for one ASIN (832081000132, 000888879644, 008474921043, 832081000255); none of the others is recorded as an alias because no source ties it to this exact configuration.","domain":"identity","source":"^amazon","observation":null},{"state":"not_researched","detail":"Channel count of the 2d card's ADAT optical I/O and the input specifications of the Jensen-transformer version.","domain":"specifications","source":null,"observation":"uln2-2d-2jen-dsp"},{"state":"unknown","detail":"No licensed front photo of this unit.","domain":"images","source":null,"observation":null},{"state":"not_researched","detail":"Retail price of this configuration: the Amazon.com listing showed no offer.","domain":"markets","source":"^amazon","observation":null}]},"quality":{"structureVersion":2,"needsRebuild":false,"reviewedOn":"2026-09-25","coverage":[{"domain":"Identity","recorded":3,"expected":3,"detail":"Name, brand and classification recorded"},{"domain":"Context","recorded":2,"expected":2,"detail":"Evidence groups assigned to a researched label, edition or analysis"},{"domain":"Label photographs","recorded":0,"expected":2,"detail":"Researched contexts with an assigned photograph"},{"domain":"Specifications","recorded":8,"expected":16,"detail":"Recorded specifications mapped to comparable property keys"}],"gaps":[{"domain":"relationships","state":"unknown","detail":"GS1 prefix holder: Buycott names \"Putnam, Inc.\" as the GS1 name for this UPC, and the same 0008888 block carries a Hugh Tracey kalimba (000888878845), so the block looks like a reseller's rather than Metric Halo's; the prefix length and holder are unsettled, so no gs1_prefix_owner row is written."},{"domain":"identity","state":"disputed","detail":"The Amazon.com listing carries four UPCs for one ASIN (832081000132, 000888879644, 008474921043, 832081000255); none of the others is recorded as an alias because no source ties it to this exact configuration."},{"domain":"specifications","state":"not_researched","detail":"Channel count of the 2d card's ADAT optical I/O and the input specifications of the Jensen-transformer version.","observation":"uln2-2d-2jen-dsp"},{"domain":"images","state":"unknown","detail":"No licensed front photo of this unit."},{"domain":"markets","state":"not_researched","detail":"Retail price of this configuration: the Amazon.com listing showed no offer."},{"domain":"evidence","state":"unknown","detail":"Evidence observation date is not recorded.","observation":"uln2-base"},{"domain":"images","state":"not_researched","detail":"No product photographs recorded."},{"domain":"schema","state":"schema_gap","detail":"Some specifications retain source labels without comparable property keys."}],"observations":[{"id":"uln2-2d-2jen-dsp","label":"ULN-2 2d Expanded +DSP with two Jensen input transformers","supportedValues":0,"declaredValues":0,"sourceLinked":0,"stale":false},{"id":"uln2-base","label":"Mobile I/O ULN-2 specification sheet","supportedValues":0,"declaredValues":0,"sourceLinked":0,"stale":false}]},"images":[],"data":{"about":"The Metric Halo Mobile I/O ULN-2 2d Expanded +DSP with two Jensen transformers is a one-rack-space FireWire audio interface and stand-alone mic preamp and converter from the American pro-audio maker Metric Halo, sold under part number 000-50006-2-JEN+DSP.[^amazon] The ULN-2 provides four inputs and six outputs of simultaneous I/O with 24-bit/96 kHz conversion and two ultra-low-noise mic preamps with 72 dB of gain, and it runs from a laptop's FireWire bus or any 9 to 30 V DC source.[^mh-uln2] The +DSP version adds an on-board processor for Metric Halo plug-ins.[^sos] This configuration carries the factory-installed Jensen transformer option on both mic inputs, which Metric Halo says gives a more \"glossy\", \"smoothed\" sound and isolates the preamp electrically from the source.[^mh-jensen]\n\nMetric Halo released the ULN-2 in 2002.[^mh-jensen] Sound On Sound reviewed the ULN2+DSP in August 2004, when the DSP version used an Analog Devices SHARC 21065 chip and the interface had Mac OS drivers only.[^sos] Metric Halo's current hardware range lists the ULN-8 mkIV, the LIO-8 mkIV, the LIO-8/4p mkIV and 3d card upgrades,[^mh-range] and its direct store sells a 3d card upgrade for legacy ULN-2 units.[^mh-3d] The Amazon.com listing for this configuration was still online in September 2026.[^amazon]","aliases":[{"from":null,"name":"Metric Halo ULN-2 2d +DSP w/2 Jensen","type":"search","until":null,"locale":null},{"from":null,"name":"Metric Halo Mobile I/O ULN-2 Expanded +DSP FireWire","type":"search","until":null,"locale":null},{"from":null,"name":"ULN-2+DSP-Jensen","type":"search","until":null,"locale":null},{"from":null,"name":"000-50006-2-JEN+DSP","type":"search","until":null,"locale":null}],"markets":[{"note":"Amazon.com listing \"METRIC HALO ULN-2 2d +DSP w/2 Jensen Firewire Digital Audio Interface\" (ASIN B000CPJ2AM, model 000-50006-2-JEN+DSP) prints UPC 000888879644 among four UPCs; no offer price was shown on the day read.","price":null,"origin":null,"source":"^amazon","status":"sourced","country":"US","observed":"2026-09-25","condition":null}],"identity":{"gtin":"00000888879644","name":"Metric Halo Mobile I/O ULN-2 2d Expanded +DSP with 2 Jensen Transformers","brand":"brand/metric-halo","status":"discontinued","summary":"One-rack-space FireWire audio interface and mic preamp/converter by Metric Halo, part number 000-50006-2-JEN+DSP, with Jensen input transformers and on-board DSP.","category":"category/10005726","last_seen":"2026-09-25","model_number":"000-50006-2-JEN+DSP","last_seen_note":"Amazon.com listing B000CPJ2AM still online under this barcode when read on 2026-09-25, with no offer price shown.","country_of_sale":["US"],"default_observation":"uln2-2d-2jen-dsp"},"research":{"reviewed_on":"2026-09-25","structure_version":2},"relations":[{"from":null,"note":"Metric Halo's product page states that Metric Halo and Mobile I/O are trademarks of Metric Halo Distribution, Inc.","role":"brand_owner_at_sale","ended":null,"until":null,"market":null,"source":"^mh-uln2","status":"verified","target":"company/metric-halo"},{"from":null,"note":"The Jensen transformer option is installed at the factory by Metric Halo's Custom Shop technicians.","role":"manufactured_by","ended":null,"until":null,"market":null,"source":"^mh-jensen","status":"verified","target":"company/metric-halo"}],"references":[{"ref":"amazon","url":"https://www.amazon.com/dp/B000CPJ2AM","kind":"retailer","title":"METRIC HALO ULN-2 2d +DSP w/2 Jensen Firewire Digital Audio Interface","licence":null,"locator":null,"accessed":"2026-09-25","upstream":null,"published":null,"publisher":"Amazon.com","record_id":"B000CPJ2AM","attribution":null},{"ref":"upcitemdb","url":"https://www.upcitemdb.com/upc/000888879644","kind":"catalogue","title":"UPC 000888879644 - Metric Halo Mobile I/O ULN-2 Expanded +DSP FireWire","licence":null,"locator":null,"accessed":"2026-09-25","upstream":null,"published":null,"publisher":"UPCitemdb","record_id":"000888879644","attribution":null},{"ref":"mh-uln2","url":"http://www.mhlabs.com/metric_halo/products/mio/uln2/","kind":"manufacturer","title":"Metric Halo Mobile I/O ULN-2","licence":null,"locator":"Features and technical specifications","accessed":"2026-09-25","upstream":null,"published":null,"publisher":"Metric Halo","record_id":null,"attribution":null},{"ref":"mh-jensen","url":"https://mhsecure.com/metric_halo/products/137-custom-shop.html","kind":"manufacturer","title":"Introducing the Jensen Transformer option for ULN-2","licence":null,"locator":null,"accessed":"2026-09-25","upstream":null,"published":null,"publisher":"Metric Halo","record_id":null,"attribution":null},{"ref":"mh-range","url":"https://mhsecure.com/metric_halo/products/","kind":"manufacturer","title":"Metric Halo: Products","licence":null,"locator":"Hardware list","accessed":"2026-09-25","upstream":null,"published":null,"publisher":"Metric Halo","record_id":null,"attribution":null},{"ref":"mh-3d","url":"https://mhsecure.com/mhdirect/product.php?productid=138","kind":"manufacturer","title":"Metric Halo Direct: 3d Card for ULN-2 Legacy","licence":null,"locator":null,"accessed":"2026-09-25","upstream":null,"published":null,"publisher":"Metric Halo","record_id":null,"attribution":null},{"ref":"sos","url":"https://www.soundonsound.com/reviews/metric-halo-uln2-dsp","kind":"publication","title":"Metric Halo ULN2+DSP (review by Derek Johnson)","licence":null,"locator":null,"accessed":"2026-09-25","upstream":null,"published":"2004-08","publisher":"Sound On Sound","record_id":null,"attribution":null},{"ref":"mh-move","url":"https://mhsecure.com/metric_halo/community/mh-news/360.html","kind":"manufacturer","title":"Metric Halo Relocates To Sun-Drenched Florida","licence":null,"locator":null,"accessed":"2026-09-25","upstream":null,"published":"2011-12","publisher":"Metric Halo","record_id":null,"attribution":null}],"observations":[{"id":"uln2-2d-2jen-dsp","kind":"edition","note":"The configuration this barcode is listed for on Amazon.com and UPCitemdb.","label":"ULN-2 2d Expanded +DSP with two Jensen input transformers","market":["US"],"source":"^amazon","status":"supported","language":null,"observed":"2026-09-25","valid_from":null,"net_content":null,"pack_format":null,"piece_count":null,"valid_until":null,"model_number":"000-50006-2-JEN+DSP","pack_quantity":null,"ingredients_text":null,"ingredients_declaration":null,"ingredients_exempt_basis":null},{"id":"uln2-base","kind":"edition","note":"Metric Halo's specification sheet for the ULN-2 with its standard capacitor-coupled inputs; the Jensen option changes the input stage.","label":"Mobile I/O ULN-2 specification sheet","market":null,"source":"^mh-uln2","status":"supported","language":null,"observed":null,"valid_from":null,"net_content":null,"pack_format":null,"piece_count":null,"valid_until":null,"model_number":null,"pack_quantity":null,"ingredients_text":null,"ingredients_declaration":null,"ingredients_exempt_basis":null}],"research_gaps":[{"state":"unknown","detail":"GS1 prefix holder: Buycott names \"Putnam, Inc.\" as the GS1 name for this UPC, and the same 0008888 block carries a Hugh Tracey kalimba (000888878845), so the block looks like a reseller's rather than Metric Halo's; the prefix length and holder are unsettled, so no gs1_prefix_owner row is written.","domain":"relationships","source":"https://www.buycott.com/upc/000888879644","observation":null},{"state":"disputed","detail":"The Amazon.com listing carries four UPCs for one ASIN (832081000132, 000888879644, 008474921043, 832081000255); none of the others is recorded as an alias because no source ties it to this exact configuration.","domain":"identity","source":"^amazon","observation":null},{"state":"not_researched","detail":"Channel count of the 2d card's ADAT optical I/O and the input specifications of the Jensen-transformer version.","domain":"specifications","source":null,"observation":"uln2-2d-2jen-dsp"},{"state":"unknown","detail":"No licensed front photo of this unit.","domain":"images","source":null,"observation":null},{"state":"not_researched","detail":"Retail price of this configuration: the Amazon.com listing showed no offer.","domain":"markets","source":"^amazon","observation":null}],"specifications":[{"key":null,"mode":null,"note":"Model number and manufacturer part number on the Amazon.com listing.","unit":null,"state":"known","value":"000-50006-2-JEN+DSP","method":"printed","source":"^amazon","property":"Manufacturer part number","qualifier":null,"observation":"uln2-2d-2jen-dsp","numeric_value":null},{"key":null,"mode":null,"note":"Factory-installed option replacing the capacitor coupling of the input stage; Metric Halo's prototype used a pair of Jensen JT16-A transformers.","unit":null,"state":"known","value":"Jensen transformers on both mic inputs","method":"printed","source":"^mh-jensen","property":"Input transformers","qualifier":null,"observation":"uln2-2d-2jen-dsp","numeric_value":null},{"key":null,"mode":null,"note":"Configuration of the +DSP version reviewed in August 2004.","unit":null,"state":"known","value":"Analog Devices SHARC 21065, 2 MB flash, 8 MB SDRAM","method":"printed","source":"^sos","property":"DSP","qualifier":null,"observation":"uln2-2d-2jen-dsp","numeric_value":null},{"key":"interface","mode":null,"note":"The second port allows chaining further devices.","unit":null,"state":"known","value":"FireWire, two connectors","method":"printed","source":"^sos","property":"Host connection","qualifier":null,"observation":"uln2-base","numeric_value":null},{"key":null,"mode":null,"note":null,"unit":null,"state":"known","value":"4 inputs, 6 outputs","method":"printed","source":"^mh-uln2","property":"Simultaneous I/O","qualifier":null,"observation":"uln2-base","numeric_value":null},{"key":null,"mode":null,"note":null,"unit":null,"state":"known","value":"24 bit / 96 kHz A/D/A on all channels","method":"printed","source":"^mh-uln2","property":"Conversion","qualifier":null,"observation":"uln2-base","numeric_value":null},{"key":null,"mode":null,"note":"Stepped gain +6 dB to +72 dB in 6 dB steps.","unit":"dB","state":"known","value":"72","method":"printed","source":"^mh-uln2","property":"Mic preamp maximum gain","qualifier":"exact","observation":"uln2-base","numeric_value":72},{"key":null,"mode":null,"note":"20 Hz to 20 kHz flat at 72 dB gain, 150 Ω source.","unit":"dBu","state":"known","value":"-130.5","method":"printed","source":"^mh-uln2","property":"Equivalent input noise","qualifier":"exact","observation":"uln2-base","numeric_value":-130.5},{"key":null,"mode":null,"note":null,"unit":null,"state":"known","value":"AES/EBU and S/PDIF, word clock in/out","method":"printed","source":"^mh-uln2","property":"Digital I/O","qualifier":null,"observation":"uln2-base","numeric_value":null},{"key":"width","mode":null,"note":"13.5 in; one rack space.","unit":"cm","state":"known","value":"34.3","method":"printed","source":"^mh-uln2","property":"Width","qualifier":"exact","observation":"uln2-base","numeric_value":34.3},{"key":"depth","mode":null,"note":"8.25 in.","unit":"cm","state":"known","value":"21","method":"printed","source":"^mh-uln2","property":"Depth","qualifier":"exact","observation":"uln2-base","numeric_value":21},{"key":"height","mode":null,"note":"1.73 in.","unit":"cm","state":"known","value":"4.4","method":"printed","source":"^mh-uln2","property":"Height","qualifier":"exact","observation":"uln2-base","numeric_value":4.4},{"key":"mass","mode":null,"note":"4 lb.","unit":"kg","state":"known","value":"1.8","method":"printed","source":"^mh-uln2","property":"Weight","qualifier":"exact","observation":"uln2-base","numeric_value":1.8},{"key":"power","mode":null,"note":"8 W at 9 to 30 V DC; 2.1 mm coaxial jack, 4-pin XLR broadcast battery connector or FireWire bus power.","unit":"W","state":"known","value":"8","method":"printed","source":"^mh-uln2","property":"Power rating","qualifier":"exact","observation":"uln2-base","numeric_value":8},{"key":"voltage","mode":null,"note":null,"unit":"V","state":"known","value":"9-30 V DC","method":"printed","source":"^mh-uln2","property":"Supply voltage","qualifier":"between","observation":"uln2-base","numeric_value":9},{"key":"compatibility","mode":null,"note":"As stated in the August 2004 review.","unit":null,"state":"known","value":"Mac OS; no Windows drivers","method":"printed","source":"^sos","property":"Host compatibility","qualifier":null,"observation":"uln2-base","numeric_value":null}]},"licences":{"database":"ODbL-1.0","text":"CC-BY-SA-4.0","images":"See each image record"}}