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Descriere
TOPPING L70
Balanced NFCA Headphone Amplifier / Preamplifier Black
With the L70, Topping offers a highly engineered balanced NFCA headphone amplifier and preamplifier combo that delivers excellent sonic performance and is suitable for a wide range of use scenarios. Whether you are using demanding headphones, high sensitivity IEMs, or pairing with a power amplifier, the L70 is the ideal ally for pure, rich, dynamic listening.
High performance NFCA amplifier modules
The L70 uses the same NFCA (Nested Feedback Composite Amplifier) module as the A90. Its hybrid voltage/current feedback architecture combined with UHGF (Ultra High Gain Feedback) technology offers excellent DC and AC performance, extremely low THD+N and an incredibly high dynamic range of 146dB. In addition, the L70 has a high output current and a very low output impedance and noise level, allowing it to drive the vast majority of headphones on the market, including the most demanding models.
Multiple headphone outputs
The L70 is compatible with most headphone connectors. It integrates a balanced XLR 4 pins, a balanced 4.4mm jack and an single-ended 6.35mm jack. The on-board balanced amplifier circuitry is suitable for both balanced and single-ended headphones. In addition, its high output voltage and current as well as its low output impedance allow it to accompany sensitive headphones and high-impedance headphones without difficulty.
Two levels of gain
The Topping L70 provides two levels of gain to cover most needs of different headphones.
Single-ended output : Low gain : 6.0dB / High gain : 19.8dB
Balanced output : Low gain : 0dB / High gain : 13.8dB
Preamplifier function
The L70 is not only capable of driving headphones but can also be used as a preamplifier. In this mode you get the same performance as with the headphone amplifier and the single-ended 20Ω and balanced 40Ω output impedances allow compatibility with many amplifiers. In addition, the L70 comes with a remote control for convenient control.
Custom volume control
Using an R2R volume control composed of relays and a resistor network, the L70 ensures a precise adjustment, a great durability and a perfect balancing of the channels. It also incorporates a memory for the volume and gain level according to 8 profiles that can be customized according to the connected equipment.
Ground loop eliminator
A ground loop can occur when multiple devices are used together. The L70 has a GND/LIFT switch to solve this problem. In normal use, simply set it to the GND position. When a ground loop is encountered, select LIFT mode to eliminate the ground loop.
12V Trigger
The L70 integrates a 12V trigger with active (trigger output) and passive (trigger input) control. With only a simple 3.5mm jack cable, the Topping L70 can be switched on and off in sync with your other equipment with a 12V trigger interface.
1 | ON-OFF / Input selector button |
2 | Balanced XLR 4 pins headphone output |
3 | Balanced Jack 4.4mm headphone output |
4 | Single-ended Jack 6.35mm headphone output |
5 | Volume button |
6 | Single-ended stereo XLR / Jack 6.35mm combo input |
7 | Single-ended stereo RCA input |
8 | Single-ended stereo RCA output |
9 | Balanced stereo XLR output |
10 | 12V Trigger input |
11 | 12V Trigger output |
12 | Ground loop elimination switch |
13 | Firmware update port |
14 | Power connector |
15 | Power switch |
Technical characteristics
SPECIFICATIONS | |
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Product type | Headphone amplifier Preamplifier |
Inputs | 1x Balanced stereo Jack 6.35mm / XLR combo 1x Single-ended stereo RCA |
Outputs | 1x Balanced stereo XLR 1x Single-ended stereo RCA 1x Balanced XLR 4 pins headphone output 1x Balanced Jack 4.4mm headphone output 1x Single-ended Jack 6.35mm headphone output |
Amplifier | NFCA |
HEADPHONE AMPLIFIER MEASUREMENTS |
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---|---|---|---|---|
SE IN / SE OUT | BAL IN / SE OUT | SE IN / BAL OUT | BAL IN / BAL OUT | |
THD+N @ 1kHz (A-wt) | < 0.00006% @ 500mW, 32Ω < 0.000055% @ 80mW, 300Ω |
< 0.00007% @ 500mW, 32Ω < 0.000065% @ 80mW, 300Ω |
< 0.00006% @ 2000mW, 32Ω < 0.000055% @ 320mW, 300Ω |
< 0.00007% @ 2000mW, 32Ω < 0.000065% @ 320mW, 300Ω |
THD @ 20Hz-20kHz (90kBw) | < 0.00008% @ 500mW, 32Ω < 0.00007% @ 80mW, 300Ω |
< 0.00015% @ 500mW, 32Ω < 0.00015% @ 80mW, 300Ω |
< 0.00009% @ 2000mW, 32Ω < 0.00008% @ 320mW, 300Ω |
< 0.0002% @ 2000mW, 32Ω < 0.00015% @ 320mW, 300Ω |
SNR @ Max Out, 1kHz (A-wt) | 143dB | 138dB | 146dB | 139dB |
Dynamic range @ 1kHz (A-wt) | 143dB | 138dB | 146dB | 139dB |
Frequency response | 10Hz-100kHz (±0.1dB) | 10Hz-100kHz (±0.5dB) | 10Hz-100kHz (±0.1dB) | 10Hz-100kHz (±0.5dB) |
Output level | 26vpp | 26Vpp | 52Vpp | 52Vpp |
AP Measured noise level (A-wt) | < 0.7µVrms @ G=L < 1.2µVrms @ G=H |
< 0.7µVrms @ G=L < 1.2µVrms @ G=H |
< 0.9µVrms @ G=L < 2.2µVrms @ G=H |
< 0.9µVrms @ G=L < 2.2µVrms @ G=H |
Effective noise level* (A-wt) | < 0.3µVrms @ G=L < 1.1µVrms @ G=H |
< 0.3µVrms @ G=L < 1.1µVrms @ G=H |
< 0.7µVrms @ G=L < 2.2µVrms @ G=H |
< 0.4µVrms @ G=L < 2.2µVrms @ G=H |
Crosstalk @ 1kHz | -104dB | -104dB | -120dB | -120dB |
Input sensitivity | 9.6Vrms @ G=L 1.9Vrms @ G=H |
9.6Vrms @ G=L 1.9Vrms @ G=H |
9.6Vrms @ G=L 1.9Vrms @ G=H |
9.6Vrms @ G=L 1.9Vrms @ G=H |
Gain | 0dB @ G=L 13.8dB @ G=H |
0dB @ G=L 13.8dB @ G=H |
6dB @ G=L 19.8dB @ G=H |
6dB @ G=L 19.8dB @ G=H |
Output impedance | < 0.1Ω | < 0.1Ω | < 0.2Ω | < 0.2Ω |
Output power | 2* 3500mW @ 16Ω, THD+N < 0.1% 2* 2300mW @ 32Ω, THD+N < 0.1% 2* 1200mW @ 64Ω, THD+N < 0.1% 2* 290mW @ 300Ω, THD+N < 0.1% |
2* 6000mW @ 16Ω, THD+N < 0.1% 2* 7500mW @ 32Ω, THD+N < 0.1% 2* 4700mW @ 64Ω, THD+N < 0.1% 2* 1150mW @ 300Ω, THD+N < 0.1% 2* 600mW @ 600Ω, THD+N < 0.1% |
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Load impedance | > 8Ω |
PREAMPLIFIER MEASUREMENTS |
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---|---|---|---|---|
SE IN / SE OUT | BAL IN / SE OUT | SE IN / BAL OUT | BAL IN / BAL OUT | |
THD+N @ 1kHz (A-wt) | < 0.000055% | < 0.00006% | < 0.000055% | < 0.00006% |
THD @ 20Hz-20kHz (90kBw) | < 0.00007% | < 0.00015% | < 0.00008% | < 0.00015% |
SNR @ 1kHz (A-wt) | 143dB | 138dB | 146dB | 139dB |
Dynamic range @ 1kHz (A-wt) | 143dB | 138dB | 146dB | 139dB |
Frequency response | 10Hz-100kHz (±0.1dB) | 10Hz-100kHz (±0.5dB) | 10Hz-100kHz (±0.1dB) | 10Hz-100kHz (±0.5dB) |
Output level | 26vpp | 26Vpp | 52Vpp | 52Vpp |
AP Measured noise level (A-wt) | < 0.7µVrms @ G=L < 1.2µVrms @ G=H |
< 0.7µVrms @ G=L < 1.2µVrms @ G=H |
< 0.9µVrms @ G=L < 2.2µVrms @ G=H |
< 0.9µVrms @ G=L < 2.2µVrms @ G=H |
Effective noise level* (A-wt) | < 0.3µVrms @ G=L < 1.1µVrms @ G=H |
< 0.3µVrms @ G=L < 1.1µVrms @ G=H |
< 0.7µVrms @ G=L < 2.2µVrms @ G=H |
< 0.4µVrms @ G=L < 2.2µVrms @ G=H |
Crosstalk @ 1kHz | -104dB | -104dB | -120dB | -120dB |
Input sensitivity | 9.6Vrms @ G=L 1.9Vrms @ G=H |
9.6Vrms @ G=L 1.9Vrms @ G=H |
9.6Vrms @ G=L 1.9Vrms @ G=H |
9.6Vrms @ G=L 1.9Vrms @ G=H |
Gain | 0dB @ G=L 13.8dB @ G=H |
0dB @ G=L 13.8dB @ G=H |
6dB @ G=L 19.8dB @ G=H |
6dB @ G=L 19.8dB @ G=H |
Output impedance | 20Ω | 20Ω | 40Ω | 40Ω |
*The effective noise level is obtained by boosting the noise of the L70 by 40dB using a low noise amplifier before the APx555B then dividing the measured noise by 100.
GENERAL | |
---|---|
Color | Black |
Dimensions | 200*138*44mm |
Package | 1x Topping L70 1x Remote control 1x Jack 6.35mm to Jack 3.5mm adapter |
Tip produs
Amplificator pentru căști
Preamplificator
Intrări:
1x combo Jack stereo balansat de 6,35 mm / XLR
1x RCA stereo single-ended
Ieșiri:
1x XLR stereo balansat
1x RCA stereo single-ended
1 ieșire pentru căști XLR balansat cu 4 pini
Ieșire pentru căști 1x jack balansat de 4,4 mm
1 ieșire pentru căști Jack single-ended de 6,35 mm
Amplificator: NFCA
GENERAL
Culoare: negru
Dimensiuni: 200x138x44mm
Pachetul contine:
1x Topping L70
1x telecomandă
1x adaptor jack 6,35 mm la jack 3,5 mm
1x cablu de alimentare
Informații suplimentare
Producător | |
---|---|
Disponibilitate | În Stoc Furnizor * Verificati disponibilitatea produsului! |
Unitate Pret | Bucata |
Explicatii in ceea ce priveste rodajul echipamentelor, cat si al cablurilor, asezarea optima a echipamentelor in camera de auditie, importanta acusticii camerei si nu in ultimul rand sistemul de alimentare a intregului echipament:
PENTRU BOXE:
- Pentru performante optime este necesara pozitionarea boxelor la o distanta de minim 30-40cm de peretele din spate pentru boxele cu bass-reflex in spate, pentru cele cu bass-reflex in fata, recomandam pozitionarea la o distanta de 10-20cm fata de peretele din spate, dar totodata la o distanta de cel putin 50cm fata de peretii laterali. Tineti cont de faptul ca orice piesa de mobilier din incapere, joaca rol de absorbtie fonica, dar si de difuzie fonica daca acestea din urma sunt din materiale ceramica sau oglinzi, geamuri sau alt material reflectorizant. In acest sens, gasiti pe blogul nostru, multiple articole care va pot ajuta
- Boxele vor ajunge sa functioneze in parametrii recomandati de producator, dupa minim 50 de ore (ideal 100 ore) de functionare la volum mediu. In aceasta perioada de timp, de “rodaj a boxelor”, sunetul va fi la inceput mai artificial, bass-ul nu va fi inca controlat, inaltele rigide iar vocile usor retinute, pe masura ce boxele vor functiona, veti remarca cum bas-ul devine mai controlat, mai prezent si mai voluminos, vocile si sunetele medii devin naturale si mai echilibrate, iar inaltele devin rafinate si detaliate. Exista boxe care necesita un „rodaj” mai amplu de minim 300 de ore mai ales in cazul celor care au difuzoare de kevlar, carbon sau alte materiale de acest tip. Boxele care se „rodeaza” cel mai repede sunt cele care au difuzoare de celuloza.
Imbunatatirea sunetului unui sistem audio stereo (Partea I)
Imbunatatirea sunetului unui sistem audio stereo – (Partea II)
PENTRU AMPLIFICATOARE, DAC-URI, PREAMPLIFICATOARE, RECEIVER STEREO & HOME CINEMA, SURSE DIGITALE AUDIO-VIDEO:
- Pentru performante optime este necesar „rodarea” echipamentului, In functie de complexitatea componentelor din aparatul dumneavoastra acesta poate dura intre 30-200 ore.
- Rodajul se face la volum minim, fiind astfel suficient faptul ca acesta este alimentat corect conform manualului de utilizare la 220-230 Volti si trece semnal audio sau video dupa caz prin el.
- Echipamentul supus „rodajului” va ajunge sa functioneze in parametrii recomandati de producator, dupa perioada mai sus mentionata. In aceasta perioada de timp, de “rodaj”, sunetul va fi la inceput ceva mai artificial, bass-ul nu va fi inca controlat, inaltele rigide iar vocile usor retinute, pe masura ce echipamentul va functiona, veti remarca cum bas-ul devine mai controlat, mai prezent si mai voluminos, vocile si sunetele medii devin naturale si mai echilibrate, iar inaltele devin rafinate si detaliate.
- In ceea ce priveste echipamentul video precum videoproiector, TV, media player, blueray player, necesita un "rodaj" de cel putin 50 de ore. Lipsa acestuia nu va poate oferi maxim de performanta. "Rodajul" se efectueaza prin simpla utilizare a acestuia, intr-un mod conform specificatiilor mentionate de producator.
PENTRU CABLURI:
- Pentru performante optime este necesara „rodarea” cablurilor, In functie de complexitatea conductorului folosit, cat si geometriei acestuia, „rodajul” poate dura intre 30-100 ore.
- Rodajul se face la volum minim, fiind astfel suficient faptul ca va trece semnal audio sau video dupa caz prin el.
- Cablul supus „rodajului” va ajunge sa functioneze in parametrii recomandati de producator, dupa perioada mai sus mentionata. In aceasta perioada de timp, de “rodaj”, sunetul va fi la inceput ceva mai artificial, pe masura ce cablul va functiona, veti remarca cum bas-ul devine mai controlat, mai prezent si mai voluminos, vocile si sunetele medii devin naturale si mai echilibrate, iar inaltele devin rafinate si detaliate.
Articole indrumatoare:
Tratamentul Acustic si Izolarea Fonica
Pentru un sistem echilibrat, trebuie tinut cont pe langa asezarea corecta a boxelor in incapere, al echipamentelor, sistemul de alimentare al acestora, tinand cont de instalatia electrica a locatiei.
Pentru detalii privind aceste aspecte de rodaj si nu numai, va rugam sa ne consultati!
Sa fii audiofil nu se rezuma doar la a asculta muzica. Sa fii audiofil inseamna sa cauti mereu cea mai buna calitate audio care o permit circumstantele oricarui sistem, indiferent de componentele care il formeaza.
Intr-o epoca in care gadget-urile ne permit mobilitate maxima, acest lucru se aplica si muzicii preferate pe care o luam cu noi si desigur calitatii reproducerii acesteia. Astfel apar produse precum DAC-uri si amplificatoare portabile, pe care Guangzhou TOPPING Electronics Technology Co., Ltd le-au ridicat la nivel de arta, rapotandu-le la cea mai buna calitate si cele mai elegante finisaje.
Fondata acum mai bine de un deceniu, TOPPING au adus pe piata HI-FI produse entry-level menite sa rasfete timpanele oricarui audiofil cu cele mai clare sunete, oferind un raport pret/ performanta admirabil.
Compania chineza si-a facut intrarea pe piata audio in 2008 si de atunci produce amplificatoare si DAC-uri portabile, dar si amplificatoare de putere, surse de alimentare, convertoare digitale, RACK-uri si amplificatoare integrate.
TOPPING se concentreaza in principal pe segmentul de pret inferior al pietei, oferind produse accesibile consumatorilor pretentiosi, dar in acelasi timp constienti de buget.
Cu un proces de fabricatie "all in house", produsele TOPPING ofera o fiabilitate ridicata si o calitate stabila, garantata de un proces de proiectare complex ce a dus la crearea unei noi generatii de produse ce trec cu succes orice teste.
Design-ul produselor TOPPING este inspirat de instrumentele profesionale, iar materialele folosite, precum sticla sau aluminiu, ofera o imagine eleganta, ce atrage admiratia utilizatorilor din intreaga lume.
Recenzii
Nu există recenzii până acum.